Answers
Foams have the capability of recovering any gaps created by firefighters walking through and disturbing the foam layer is Aqueous film-forming foam
Fire suppressants like aqueous film-forming foam (AFFF) are used to put out flammable liquid fires like fuel fires.
AFFF is frequently employed in fire fighting apparatus, shipboard and land-based facility fire suppression systems, and fire training facilities. According to the amount of water it is mixed with, AFFF is often sold as a concentrate and is referred to as "3%" or "6%" (Type 3 or Type 6, respectively).
To avoid long-term harmful effects on human health or the environment, containment and cleanup may be necessary when AFFF is used, discharged, or released into the environment.
Learn more about firefighting foam:
https://brainly.com/question/29524190
#SPJ4
Related Questions
1)The average lethal dose of Valium is 1.52 mg/kg of body weight. Estimate how many grams of Valium would be lethal for a 200.-lb woman. Show all your calculations. (1lb = 453.6 g)
2) A patient in hospital is receiving the antibiotic amoxcillin IV at the rate of 50. mL/h. The IV contains 1.5 g of the antibiotic in 1000. mL. (IV stands for intravenous). Calculate the mg/min of the drip. Show all your calculations
Answers
Answer:
1. 0.138g of valium would be lethel in the woman
2. 125mg/min is the drip of the patient
Explanation:
1. In a body, an amount of Valium > 1.52mg / kg of body weight would be lethal.
A person that weighs 200lb requires:
200lb × (453.6g / 1lb) × (1kg / 1000g) = 90.72kg (Weight of the woman in kg)
90.72kg × (1.52mg / kg) =
137.9mg ≡
0.138g of valium would be lethel in the woman2. The IV contains 1.5g = 1500mg/mL.
If the patient is receiving 5.0mL/h, its rate in mg/h is:
5.0mL/h × (1500mg/mL) = 7500mg/h
Now as 1h = 60min:
7500mg/h × (1h / 60min) =
125mg/min is the drip of the patientg Which of the following solutes in aqueous solution would be expected to exhibit the smallest freezing-point lowering (assuming ideal behavior)? In other words, which one would have the highest freezing point temperature? A) 0.20 m CaCl2 B) 0.50 m C2H5OH (ethanol) C) 0.10 m Al(NO3)3 D) 0.25 m NH4Br E) 0.30 m NaCl
Answers
Answer:
0.10 m Al(NO3)3
Explanation:
Let us note that the substance that has the highest freezing point will have the lowest freezing point depression. Since;
ΔTf = Kf m i
ΔTf = freezing point depression
Kf = freezing point constant
m = molality
i = Van't Hoft factor
Given that the freezing point depression depends on the molality and the Van't Hoft factor (number of particles), we can see that 0.10 m Al(NO3)3 has the least freezing point depression and highest freezing point temperature because it gives the least value of m * i. That is 0.10 m * 4 = 0.4
Make an argument about the following claim: Exothermic reactions only release thermal energy
Answers
Exothermic reactions only release thermal energy, raising the temperature of the immediate environment. The environment is cooled through an endothermic process that absorbs heat.
What is an exothermic reaction ?An exothermic process is one in which energy is given off as heat or light. In contrast to an endothermic process, which draws energy from its surroundings, an exothermic reaction transfers energy into the environment.
The most exothermic reaction is the burning of methane because it generates a significant quantity of heat.
Thus, Exothermic reactions only release thermal energy.
To learn more about an exothermic reaction, follow the link;
https://brainly.com/question/10373907
#SPJ9
-Convert 6.02 x 1020 formula units of MgCl₂ to mol of MgCl₂:
Answers
6.02 x \(10^{20\) formula units of MgCl₂ is equal to 0.1 moles of MgCl₂.
To convert formula units of MgCl₂ to moles of MgCl₂, we need to use Avogadro's number, which relates the number of formula units to the number of moles.
Avogadro's number (NA) is approximately 6.022 x 10^23 formula units per mole.
Given that we have 6.02 x 10^20 formula units of MgCl₂, we can set up a conversion factor to convert to moles:
(6.02 x 10^20 formula units MgCl₂) * (1 mol MgCl₂ / (6.022 x 10^23 formula units MgCl₂))
The formula units of MgCl₂ cancel out, and we are left with moles of MgCl₂:
(6.02 x 10^20) * (1 mol / 6.022 x 10^23) = 0.1 mol
Therefore, 6.02 x 10^20 formula units of MgCl₂ is equal to 0.1 moles of MgCl₂.
It's important to note that this conversion assumes that each formula unit of MgCl₂ represents one mole of MgCl₂. This is based on the stoichiometry of the compound, where there is one mole of MgCl₂ for every one formula unit.
Additionally, this conversion is valid for any substance, not just MgCl₂, as long as you know the value of Avogadro's number and the number of formula units or particles you have.
For more such questions on MgCl₂ visit:
https://brainly.com/question/26311875
#SPJ8
You give a soccer ball a hard kick on the grass. The ball eventually comes to a stop. Which force stops the soccer ball from moving?
A. Gravity
B. Friction
C. Pull
C. Push
Answers
Answer: Friction
Explanation: It is Friction because force acts in the opposite direction to the motion of the ball slowing it and eventually stopping it.
What are the building blocks of proteins?
O sugars
O fatty acids
O amino acids
O nitrogen bases
Answers
Answer:
amino acids
Hope this helps:)
Answer:
C: Amino Acids on edge
Explanation:
Potassium superoxide, KO2, reacts with carbon dioxide to form potassium carbonate and oxygen:
This reaction makes potassium superoxide useful in a self-contained breathing apparatus. How much O2 could be produced from 2.61 g of KO2 and 4.46 g of CO2?
Answers
First, we need to write out the balanced chemical equation for the reaction: 4 KO2 + 2 CO2 → 2 K2CO3 + 3 O2
From the equation, we can see that 4 moles of KO2 react with 2 moles of CO2 to produce 3 moles of O2. Therefore, we need to convert the given masses of KO2 and CO2 into moles:
moles of KO2 = 2.61 g / molar mass of KO2 = 2.61 g / 71.10 g/mol = 0.0367 mol
moles of CO2 = 4.46 g / molar mass of CO2 = 4.46 g / 44.01 g/mol = 0.1013 mol
Next, we need to determine the limiting reagent (the reactant that will be completely consumed in the reaction) by comparing the mole ratios of KO2 and CO2 in the balanced equation. The ratio of moles of KO2 to moles of CO2 is:
0.0367 mol KO2 / 4 mol KO2 per 2 mol CO2 = 0.0184 mol CO2
Since this ratio is less than the actual number of moles of CO2 we have (0.1013 mol), CO2 is in excess and KO2 is the limiting reagent.
Using the mole ratio from the balanced equation, we can calculate the number of moles of O2 produced:
moles of O2 = 3 mol O2 per 4 mol KO2 × 0.0367 mol KO2 = 0.0275 mol O2
Finally, we can convert the moles of O2 to grams:
mass of O2 = moles of O2 × molar mass of O2 = 0.0275 mol × 32.00 g/mol = 0.88 g
Therefore, 2.61 g of KO2 and 4.46 g of CO2 would produce 0.88 g of O2.
For more questions on: chemical
https://brainly.com/question/29886197
#SPJ11
List any two uses of Brass , Bronze , Sulphur , Iodine
Answers
BRASS :It is easy to form into various shapes, a good conductor of heat, and generally resistant to corrosion from salt water. 1 pipes and 2 tubes, 3 screws, 4 cartridge casings for firearms.
BRONZE :for bearings because of its friction properties, and as 1 musical instruments ,2 and medals
Sulphur :1 making car batteries, 2 fertilizer
IODINE :1 Iodine regulates skin moisture levels and aids in the healing of cuts and scars through cellular regeneration. 2 Iodine also regulates the hormones responsible for acne breakouts.3 Treating thyroid cancer.
When you write the formula for sodium hydroxide, you do not have to put parentheses around the hydroxide polyatomic ion. However, when writing the formula for aluminum hydroxide, you must put parentheses around the hydroxide polyatomic ion. a) Write each formula. b) Explain why the parentheses are necessary for aluminum hydroxide.
Answers
(a). Sodium hydroxide: NaOH, aluminum hydroxide: \(Al(OH)_3\)
(b). The parentheses are necessary for aluminum hydroxide because the hydroxide polyatomic ion has a subscript of 3, indicating that there are three hydroxide ions for every one aluminum ion.
a) The formula for sodium hydroxide is NaOH, and the formula for aluminum hydroxide is \(Al(OH)_3\)
b) Aluminum hydroxide requires brackets because there are three hydroxide ions for every one aluminum ion, according to the hydroxide polyatomic ion's subscript of 3. Without the parentheses, it would be unclear whether the subscript of 3 applies to only the oxygen or to the entire hydroxide ion. By enclosing the entire hydroxide ion in parentheses and placing the subscript outside the parentheses.
To know more about aluminum ion, here
brainly.com/question/21373859
#SPJ1
How does density relate to the structure of the earth ?
Answers
Explanation:
The atmosphere and Earth's interior are layered by density. Gravity pulls more strongly on denser materials so denser materials are at the center of things. Earth's core, at its center, is denser than its crust. The lowest layer of the atmosphere is denser than the upper layer.
Milk of magnesia, which is an aqueous suspension of magnesium hydroxide, is used as an antacid in the reaction below. How many molecules of HCl would have to be present to form 34.52 g of MgCl₂?
Mg(OH)₂(s) + 2 HCl(aq) → 2 H₂O(l) + MgCl₂(aq)
Answers
Approximately 4.37 x 10^23 molecules of HCl would be required to form 34.52 g of MgCl₂.
To determine the number of molecules of HCl required to form 34.52 g of MgCl₂, we need to use the molar mass and stoichiometry of the balanced equation:
Mg(OH)₂(s) + 2 HCl(aq) → 2 H₂O(l) + MgCl₂(aq)
The molar mass of MgCl₂ is 95.21 g/mol.
First, we need to calculate the number of moles of MgCl₂ formed:
Moles of MgCl₂ = mass of MgCl₂ / molar mass of MgCl₂
Moles of MgCl₂ = 34.52 g / 95.21 g/mol
Moles of MgCl₂ = 0.363 mol
According to the balanced equation, the stoichiometric ratio between HCl and MgCl₂ is 2:1. Therefore, the moles of HCl required can be calculated as follows:
Moles of HCl = 2 * Moles of MgCl₂
Moles of HCl = 2 * 0.363 mol
Moles of HCl = 0.726 mol
To calculate the number of molecules, we need to use Avogadro's number, which is approximately 6.022 x 10^23 molecules/mol.
Number of molecules of HCl = Moles of HCl * Avogadro's number
Number of molecules of HCl = 0.726 mol * 6.022 x 10^23 molecules/mol
Number of molecules of HCl = 4.37 x 10^23 molecules
Therefore, approximately 4.37 x 10^23 molecules of HCl would be required to form 34.52 g of MgCl₂.
For more such questions on molecules
https://brainly.com/question/1351818
#SPJ8
Newton's third law of motion states that if one object exerts a force on another
object, then the second object exerts a force of equal strength in the same
direction. True or False?
Answers
Answer: true
Explanation: if you hit a book over you fell the impact of the book on your hand then it falls
ILL IBE BRAINLY Asian Tsunami 2004:
2. In decomposition, how are other parts of the ecosystem affected?
3. Under which type of change would more organisms be able to survive? Why?
4. What are some positive effects of a rapid change to an ecosystem?
5. What are some positive effects of a slow change to an ecosystem?
Answers
3. A few ecosystems that live in the ocean. Because, they would still be in the ocean.
i’m sorry i don’t know the other answers best of luck tho!
Ammonia will decompose into nitrogen and hydrogen at high temperature. Calculate the pressure equilibrium constant for the decomposition of ammonia at the final temperature of the mixture
Answers
Answer:
Kp = P (N₂) . P³ (H₂) / P² (NH₃)
Explanation:
The reaction for the decomposition of ammonia is given by;
2NH₃ (g) ⇌ N₂ (g) + 3H₂ (g)
The pressure equilibrium constant gives the ratio of the pressure of the product over reactants for a reaction that is at equilibrium.
The pressures of the species are raised to the powers of their respective coefficients.
In this reaction;
Products = N₂ (g) + 3H₂ (g)
Reactant = 2 NH₃ (g)
The pressure equilibrium constant (Kp) is given as;
Kp = P (N₂) . P³ (H₂) / P² (NH₃)
A rigid vessel contains three gases mixed together at RTP. The container has by volume 20.0% helium, 20.0 % neon and 60.0 % argon. Calculate the total pressure of the gases in the container.
Answers
The total pressure of the gases in the container is 1.000 atm at RTP.
To calculate the total pressure of the gases in the container, we need to use the ideal gas law, which states:
PV = nRT
where P is the pressure of the gas, V is the volume of the container, n is the number of moles of gas, R is the ideal gas constant, and T is the temperature in Kelvin.
At RTP (standard temperature and pressure), the temperature is 273 K and the pressure is 1 atm. The volume of the container is not given, but since it is rigid, we can assume it is constant.
To find the total pressure, we need to first calculate the partial pressures of each gas using the mole fraction of each gas. The mole fraction is the fraction of the total moles of gas that are made up of each gas.
Let's assume that we have 100 moles of gas in the container. Then, we have:
20.0 moles of helium (20.0% of 100 moles)
20.0 moles of neon (20.0% of 100 moles)
60.0 moles of argon (60.0% of 100 moles)
The total moles of gas is then:
n = 20.0 moles + 20.0 moles + 60.0 moles = 100 moles
The mole fraction of helium is:
X(He) = n(He) / n = 20.0 moles / 100 moles = 0.200
The mole fraction of neon is:
X(Ne) = n(Ne) / n = 20.0 moles / 100 moles = 0.200
The mole fraction of argon is:
X(Ar) = n(Ar) / n = 60.0 moles / 100 moles = 0.600
The partial pressure of helium is:
P(He) = X(He) * P(total) = 0.200 * 1 atm = 0.200 atm
The partial pressure of neon is:
P(Ne) = X(Ne) * P(total) = 0.200 * 1 atm = 0.200 atm
The partial pressure of argon is:
P(Ar) = X(Ar) * P(total) = 0.600 * 1 atm = 0.600 atm
The total pressure is the sum of the partial pressures:
P(total) = P(He) + P(Ne) + P(Ar) = 0.200 atm + 0.200 atm + 0.600 atm = 1.000 atm
For more question on pressure click on
https://brainly.com/question/24719118
#SPJ11
are the “strings” of celery xylem or pholem tissue?
Answers
How many moles of O2 are needed to combine with 6.2 moles of phosphorus
Answers
The number of moles of O₂ are needed to combine with 6.2 moles of phosphorus is 7.75 moles.
How to calculate number of moles?The number of moles of a substance can be calculated using stoichiometry. Stoichiometry is the quantitative relationship between the reactants and products of a specific reaction or equation.
According to this question, phosphorus reacts with oxygen gas as follows:
4P + 5O₂ → 2P₂O5
Based on the above equation, 4 moles of phosphorus reacts with 5 moles of oxygen.
If 6.2 moles of P reacts, 7.75 moles of oxygen gas will be produced.
Learn more about stoichiometry at: https://brainly.com/question/30215297
#SPJ1
Are any of the bonds formed between the following pairs of atoms ionic?
Choose one or more:
O and H
B and H
P and F
C and Cl
Ca and Cl
Answers
Answer:
O and H
Explanation:
I don't know the explanation
Nonmetals typically form covalent connections with one another. For instance, each hydrogen (H) and oxygen (O) atom in water (H2O) shares a pair of electrons to create the molecule of two single-bonded hydrogen atoms and one single-bonded oxygen atom. Thus, option A is correct.
What are atoms ionic?Ions with opposing charges electrostatically attract one another to form ionic bonds, sometimes referred to as electrovalent bonds, in chemical molecules.
A bond of this type is formed when the valence (outermost) electrons of one atom are irreversibly transferred to another atom.
The complete transfer of certain electrons from one atom to another results in the formation of an ionic connection.
A negatively charged ion known as a cation results from an atom losing one or more electrons. An anion, or negatively charged ion, is created when an atom gains one or more electrons.
Therefore, O and H are pairs of atoms ionic.
Learn more about atoms ionic here:
https://brainly.com/question/977324
#SPJ2
Explain, using the terms "energy state" "electrons" and "light" how the colors of a flame test are produced .
Answers
The terms "energy state" "electrons" and "light" colors of a flame test are produced is because excitement of electron caused by the increased temprature
The color observed during the flame test result from the excitement of the electron caused by the increased temprature and the electron jumps from their ground state to a higher energy level and as they return to their ground state they emit visible light and the flame test is an analytical procedure used in chemistry to detect the presence of certain element and primarily metal ion and based on each element characteristics emission spectrum the color of flames in general also depend on temprature and oxygen and it sees the different color in the flame
Know more about colors
https://brainly.com/question/8039067
#SPJ1
Plants go through seasonal changes from summer to fall because temperatures ___________. A: begin to cool daylight hours decrease.
B: begin to cool and daylight hours in increase.
C: warm up in daylight hours decrease.
Or D: warm up, and daylight hours increase.
30 POINTS IF YOU ANSWER THIS QUESTION ALSO, I HAVE 15 MINS
Also, there’s no science so I picked “ chemistry”
Answers
A: begin to cool and daylight hours decrease.
Plants go through seasonal changes from summer to fall because of the changes in temperature and the length of daylight hours. As summer ends and fall begins, temperatures begin to cool down and the days become shorter. This change in temperature and daylight hours triggers physiological changes in plants, such as the slowing down of growth and the production of pigments like anthocyanins, which give leaves their characteristic red and orange colors in the fall. These changes allow the plant to prepare for the colder winter months and conserve energy for the upcoming spring growth season.
Answer:
a. begin to cool and daylight hours decrease
hope this helps ;)
What are the important qualities of a snake in this metaphor?
Answers
In the simile "Ben swallowed the sandwiches like a snake," the two things being compared are Ben (the subject of the sentence) and a snake.
The important qualities of a snake in this metaphor are its swallowing behavior and the speed at which it devours its prey.
What is the quality of the snake in the metaphor?A metaphor is a figure of speech that makes a comparison between two unrelated things, objects, or concepts, highlighting a similarity between them. Unlike similes, which use words such as "like" or "as" to make a direct comparison, metaphors state that one thing is another.
Snakes are known for their ability to consume their prey whole and quickly, using their flexible jaws and swallowing mechanism.
Therefore, the important quality of the snake in the metaphor is swallowing.
Learn more about metaphors at: https://brainly.com/question/30391953
#SPJ1
Complete question:
Answer the questions about this simile: "Ben swallowed the sandwiches like a snake."
What two things are being compared?
What are the important qualities of a snake in this metaphor?
Balance the equation
Answers
⁷ 168 g of iron reacts with excess oxygen to form 232 g of an oxide of iron. iron + oxygen H ratio iron oxide a. Calculate the mass of oxygen in the iron oxide. b. Calculate the males of oxygen in the oxide. c. Calculate the moles of iron in the iron oxide. d. Calculate the ratio of the iron to oxygen to give the formula of this oxide of iron. formula
Answers
The mass of the oxygen that reacted is 70.4 g.
What is the reaction of iron and oxygen?
The reaction between iron and oxygen is called rusting and is a oxidation process. The balanced chemical equation for the reaction is:
4 Fe + 3 O2 -> 2 Fe2O3
Number of moles of iron = 168 g/56 g/mol = 3 moles
Number of moles of iron III oxide = 232 g /160 g/mol
= 1.45 moles
The mass of the oxygen that reacted is;
If 3 moles of oxygen produces 2 moles of oxide
x moles of oxygen would produce 1.45 moles ofn the oxde
x = 3 * 1.45/2
= 2.2 moles
Mass of the oxygen = 2.2 moles * 32 g/mol
= 70.4 g
Learn more about reaction:https://brainly.com/question/28984750
#SPJ1
For the reaction
4PH3(g)↽−−⇀6H2(g)+P4(g)
the equilibrium concentrations were found to be [PH3]=0.250 M, [H2]=0.580 M,
and [P4]=0.750 M.
What is the equilibrium constant for this reaction?
c=
Answers
The equilibrium constant for the reaction given that the equilibrium concentration of [PH₃] = 0.250 M, [H₂] = 0.580 M, and [P₄] = 0.750 M is 7.3
How do I determine the equilibrium constant?From the question given above, the following data were obtained:
Equation: 4PH₃(g) ⇌ 6H₂(g) + P₄(g)Concentration of PH₃, [PH₃] = 0.250 MConcentration of H₂, [H₂] = 0.580 MConcentration of P₄, [P₄] = 0.750 MEquilibrium constant (K) =?The equilibrium constant for the reaction can be obtained as shown below:
Equilibrium constant = [Product]ᵐ / [Reactant]ⁿ
Where
m and n are coefficients of products and reactants respectivelyEquilibrium constant = [H₂]⁶[P₄] / [PH₃]⁴
Equilibrium constant = [(0.580)⁶ × 0.750] / (0.250)⁴
Equilibrium constant = 7.3
Thus, the equilibrium constant for the reaction is 7.3
Learn more about equilibrium constant:
https://brainly.com/question/16589765
#SPJ1
My grass is dying, and I believe it is because it is not getting enough water. To test my hypothesis I water my backyard every day for a month, and I leave my front yard alone. After 1 month my backyard is green and healthy while my front yard is still dead.
What is the control group?
A.
Front Yard
B.
Back Yard
C.
Water
D.
Grass Health
Answers
Answer:
D. Grass Health
Explanation:
How are dwarf galaxies designated?
Answers
Answer:
Astronomers identify numerous types of dwarf galaxies based on their shape and composition.
Explanation:
Answer:
A. prefixed with the letter "d"
Explanation:
How many neutrons does Ironatomhave?
Answers
Answer:
30 neutrons
Explanation:
The volume measuring system for a gasoline pump at the service station is calibrated at 20.0°C. If the temperature of the gasoline drops to 10.0°C, what percentage extra amount of mass of gasoline do you receive when making a purchase? The coefficient of volume expansion for gasoline is 9.5 × 10-4/K.
Answers
Answer:
answer = -0.95
Explanation:
periodic table/what do the elements in group 2 have in common pls help
a/they are all found in nature
b/they are all highly reactive nonmetals
c/they tend to form ions with a +2 electric charge
d/they tend to form ions with a -2 electric charge
Answers
Answer:
Hello. The answer is C
Explanation:
Elements in group number 2 are:
Be _ Mg _Ca_Sr_Ba_Ra
All these elements elecrical final shell has 2 electrons so
It is easier for them to lose 2 electrons to get stable.
Answer:
C
Explanation:
Its right?
A gas of N molecules is maintained at constant pressure. the graph of volume and absolute temperature is a straight line the gradient of the graph is
A)NRP
B)NR/P
Answers
The gradient of a graph shows the slope or rate of change. The graph here shows the relationship between the volume (V) and the absolute temperature (T) of a gas when the gas is kept at a constant pressure.
PV = nRT,
where
P is the pressure,
V is the volume,
n is the number of moles of the gas,
R is the ideal gas constant, and
T is the absolute temperature, the formula for the ideal gas law.
The ideal gas law can be rewritten as V = (nR/P)*T if pressure (P) is constant, volume (V) is plotted on the y-axis, and absolute temperature (T) is is plotted on the x-axis. Axis.
We can see that the gradient (m) of the graph in this equation represents (nr/p) by comparing it to the equation for a straight line, y = mx + c, where y is the dependent variable (V), x is the independent variable. variable (T), m is the gradient, and c is the y-intercept.
So, the correct option is B.
Learn more about ideal gas law, here:
https://brainly.com/question/1409639
#SPJ1