What temperature does windshield wiper fluid freeze?

Answer:

0.086

Explanation:

got it on acellus

The mass of the dry solute recovered from the given data is 0.086 g.  Option C

To determine the mass of the dry solute recovered, we need to subtract the mass of the boat from the mass of the boat with the dry solute.

Given the data provided:

Boat Mass: 0.730 g

Boat + Solution: 0.929 g

Boat + Dry: 0.816 g

To find the mass of the dry solute, we subtract the boat mass from the boat + dry mass:

Mass of Dry Solute = (Boat + Dry) - (Boat Mass)

Mass of Dry Solute = 0.816 g - 0.730 g

Mass of Dry Solute = 0.086 g

Therefore, the correct answer is c) 0.086 g.

The mass of the dry solute recovered from the given data is 0.086 g. It is important to note that the mass of the dry solute is obtained by subtracting the mass of the boat from the mass of the boat with the dry solute, as the boat mass represents the weight of the empty boat or container used in the experiment.

For more such questions on solute visit:

https://brainly.com/question/25326161

#SPJ8

: PM2.5 is defined as the mass concentration of particles in the air less than or equal to 2.5 micrometers in diameter.Question 15: False, carbon dioxide (CO2) is not considered a criteria air pollutant.

Question 16: The closest answer is 50%, but the exact percentage is not provided in the question.Question 17: The term "photochemical smog" is most synonymous with ozone (O3), which is a criteria air pollutant.Question 18: True, attainment of ambient air quality standards requires that measured concentrations at all monitoring stations within an air district are below ambient air standards.

Question 14 asks about the definition of PM2.5. PM2.5 refers to particulate matter with a diameter less than or equal to 2.5 micrometers. It represents the mass concentration of particles suspended in the air, which are small enough to be inhaled into the respiratory system and can have adverse health effects.

Question 15 states whether carbon dioxide (CO2) is a criteria air pollutant. Criteria air pollutants are a set of pollutants regulated by environmental agencies due to their detrimental impact on air quality and human health. However, carbon dioxide is not considered a criteria air pollutant because it does not directly cause harm to human health or the environment in the same way as pollutants like ozone or particulate matter.

Question 16 asks about the percentage of carbon monoxide (CO) emissions from mobile sources in Santa Clara County. While the exact percentage is not provided in the question, the closest answer option is 50%. However, it is important to note that the precise percentage may vary depending on specific local conditions and emissions sources.

Question 17 inquires about the criteria air pollutant most synonymous with the term "photochemical smog." Photochemical smog is primarily associated with high levels of ground-level ozone (O3). Ozone is formed when nitrogen oxides (NOx) and volatile organic compounds (VOCs) react in the presence of sunlight, creating a hazy and polluted atmospheric condition.

Question 18 addresses the concept of "attainment" of ambient air quality standards. To achieve attainment, measured concentrations of pollutants at all monitoring stations within an air district must be below the established ambient air quality standards. This ensures that the air quality in the given area meets the required standards for protecting human health and the environment.

Learn more about mass concentration  here:- brainly.com/question/23437000

#SPJ11

Answer:

1.03 × 10¹

Explanation:

The decimal point is after the first non-zero digit number. The decimal or the number is multiplied by a 10 with an exponent.

There are 2.71*10^24 atoms of oxygen.

1st) It is necessary to calculate the amount of oxygen in 1.50mol of sodium carbonate (Na2CO3).

We know that 1 mole of sodium carbonate has 3 moles of oxygen, so to calculate the moles of Oxygen in 1.50 moles of Na2CO3 we can use a mathematical Rule of Three:

Now we know that there are 4.5 moles of oxygen in 1.50 moles of sodium carbonate.

2nd) Finally, we can calculate the atoms of oxygen using the Avogadro's number (6.022*10^23 atoms/mol):

So, there are 2.71*10^24 atoms of oxygen in 1.50 mol of sodium carbonate.

The "air" that puffs up a potato chip bag is primarily composed of nitrogen gas (N₂).

Nitrogen gas is used for packaging due to its non-reactive nature. When the bags are filled with nitrogen gas, it displaces the oxygen inside, creating a controlled atmosphere. This is done to prevent the chips from getting stale. Oxygen can lead to oxidative reactions, causing the chips to go rancid or lose their crispiness. Nitrogen, being an inert gas, doesn't react with the chips or affect their taste or texture.

It acts as a protective barrier, shielding the chips from moisture and oxygen, thereby maintaining their freshness and extending their shelf life. The use of nitrogen gas ensures that the chips remain crispy and flavorful when you open the bag.

To learn more about nitrogen gas  here

https://brainly.com/question/44730

#SPJ4

The most likely reason that the reaction occurs at a significant rate only if the temperature of the reaction mixture is greater than 200°C is because the reaction has a high activation energy. Option A is correct.

Activation energy is the minimum amount of energy required to initiate a chemical reaction. It is the energy barrier that must be overcome to transform reactants into products during a reaction. It is expressed in Joules, Joules per mole or kilojoules per mole. Only particles with energy equal to or greater than the activation energy can initiate a reaction. Consequently, the higher the activation energy, the slower the reaction rate. For this reason, increasing the temperature of the reactants increases the kinetic energy of the particles in the mixture, resulting in a higher reaction rate.

The reaction has a high activation energy.The reaction occurs when the temperature of the reaction mixture is greater than 200°C because the reaction has a high activation energy. Activation energy is the minimum amount of energy required to initiate a chemical reaction. It is the energy barrier that must be overcome to transform reactants into products during a reaction.

Therefore, the correct answer is A.

Learn more about activation energy -

brainly.com/question/1380484

#SPJ11

Answer:

Sorry can't help

Explanation:

Cant help!

The pressure inside a container that contains 25 grams of argon is 0.34 atm.

The pressure inside a container can be calculated using the following expression;

PV = nRT

Where;

According to this question, 25 grams of argon in a container has a volume of 60 liters and at a temperature of 400 K.

P × 60 = 0.625 × 0.0821 × 400

60P = 20.525

P = 0.34 atm

Learn more about pressure at: https://brainly.com/question/18124975

#SPJ1

A titration curve is a graph showing the progress of a titration of a mixture of chemicals as a function of the amount of reactant added. A plot of pH vs. quantity of titrant added is a typical titration curve.

The curve's form is determined by the nature of the titrant, the nature of the sample being evaluated, the extent of the acid-base reaction, and the concentration of the reactants. Furthermore, the equivalence point, which is the point at which the quantity of titrant added is just enough to neutralize the sample being titrated, is often indicated on a titration curve. The titration curve for a strong base-weak acid titration and the titration curve for a weak acid-strong base titration differ slightly, with different pH ranges and shapes. In general, the titration curve of a weak acid-strong base titration begins and ends at higher pH values than the titration curve of a strong acid-weak base titration. In addition, the titration curve of a weak acid-strong base titration has a distinct inflection point that is not present in the titration curve of a strong acid-weak base titration.

Finally, the titration curve of a weak acid-strong base titration is shown below. Therefore, let's look at the pH values of NaHCO3 titrated with 1.0 M HCl. 1. pH after 0 mL HCl addedThe pH of NaHCO3, which is a weak base, is slightly basic, or around 8.4.2. pH after 1.0 mL HCl addedWe will see a little decrease in pH when we add 1.0 mL of 1.0 M HCl to 10.0 mL of 1.0 M NaHCO3.3. pH after 9.5 mL HCl addedThe pH of NaHCO3 is about 4.5 at this point. This is the endpoint of the weak acid-strong base titration.4. pH after 10.0 mL HCl addedThe equivalence point is reached after adding 10.0 mL of HCl, which corresponds to the neutralization of 10.0 mL of 1.0 M NaHCO3. The pH at the equivalence point of a weak acid-strong base titration is around 7.0.5. pH after 10.5 mL HCl addedAt this point, the pH of the mixture is more acidic, approximately 3.5.6. pH after 12.0 mL HCl addedThis point will be more acidic than the previous point, and the pH will be around 2.0 to 2.5.

To know more about titration curve visit:-

https://brainly.com/question/30826030

#SPJ11

Answer:

En verdad solo el 0,025% del agua de la tierra es dulce

Explanation:

Answer:

the answer is C

Explanation:

Record the time to complete a chemical reaction

The step that will be part of a lab procedure is; "Record the time to complete a chemical reaction."

A lab procedure refers to something that is done in the laboratory as part of an experiment.

If we look at the options carefully, we will notice that the only thing that is part of a laboratory experiment is "Record the time to complete a chemical reaction."

This action can be carried out in a live lab procedure.

Learn more: https://brainly.com/question/21397802

Measuring tool would you use to measure the area of a football field is used a tender wheel

If you need to measure much longer lengths for example the length of a football pitch then you could use a trundle wheel then you use it by pushing the wheel along the ground and it clicks every time it measures one meter and to measure the football field area then

Area = length×breadth

Area = 90m×45m

Area = 4.05m²

Know more about area

https://brainly.com/question/19896101

#SPJ1

Answer:

V = 127.57 mL

Explanation:

In this case, we are having an acid base titration, and this, according to the overall reaction:

2H₃PO₄ + 3Ca(OH)₂ -----> Ca₃(PO₄)₂ + 6H₂O

This reaction was neutralized, so, it's a neutralization reaction, therefore, we can use the following expression for neutralization reactions:

n₁ = n₂  (1)

This is because, in the equivalence point, both moles of the reagents are the same. Now we need to do a relation between this and the actual moles that we have according to the overall reaction.

In this case, we have 2 moles of acid reacting with 3 moles of base, so, the equation (1) is re-written like this:

2n₁ = 3n₂   (2)

Knowing this, and that we have values of concentrations and volume, we can write the expression of moles in terms of molarity and volume:

n = M * V    replacing in (2):

2M₁V₁ = 3M₂V₂   From here, we can solve for V₂ which is the volume of the base:

V₂ = 2M₁V₁ / 3M₂   (3)

Now, all we have to do is replace the given values to obtain the volume of the base:

V₂ = 2 * 1.6 * 59.8 / 3 * 0.5

Answer:

\(V_{Ca(OH)_2}=0.287L=287mL\)

Explanation:

Hello,

In this case, given the reaction:

\(2 H_3PO_4 + 3 Ca(OH)_2 \rightarrow Ca_3(PO_4)_2 + 6 H_2O\)

We first compute the moles of phosphoric acid that are actually reacting given the volume (must be in litres) and the molarity:

\(n_{H_3PO_4 }=1.60\frac{mol}{L}*59.8mL*\frac{1L}{1000mL} =0.0957molH_3PO_4\)

Next, we compute the moles of calcium hydroxide that are reacting by using the 3:2 molar ratio with phosphoric acid:

\(n_{Ca(OH)_2}=0.0957molH_3PO_4*\frac{3molCa(OH)_2}{2molH_3PO_4} =0.144molCa(OH)_2\)

Finally, by knowing the 0.500 M of the calcium hydroxide solution we compute the required volume:

\(V_{Ca(OH)_2}=\frac{n_{Ca(OH)_2}}{M_{Ca(OH)_2}}=\frac{0.144mol}{0.500\frac{mol}{L} } \\ \\V_{Ca(OH)_2}=0.287L=287mL\)

Best regards.

Answer:

atomic mass of sulfur is 32.06 g/mol

Explanation:

The balanced equation for 1 will be \(CS_2 + 3Cl_2 ---- > CCl_4 + S_2Cl_2\).

The balanced equation for 2 will be \(2AgI + Na_2S -- > Ag_2S + 2NaI\)

A balanced chemical equation is one in which the number of atoms of different elements in the reactions balances the number of atoms of different elements in the products.

In other words, a balanced chemical equation obeys the law of conservation of atoms.

Thus, the balanced equation for each of the equations above would be:

More on balancing chemical equations can be found here: https://brainly.com/question/28294176

#SPJ1

The masses of proton ( in kilogram) = 1.67262 × 10−27 kg ( six significant figure).

Proton is a stable subatomic particle with symbols p, H+ or 1H+ and a positive charge of +1 e elementary charge. Its mass is slightly less than that of a neutron.

A neutron is a subatomic particle (symbol n or n⁰ ) with a neutral charge and a mass slightly greater than that of a proton. Protons and neutrons form the nucleus. Electrons, protons, and neutrons are the elementary particles that make up atoms. Atoms consist of a central nucleus containing neutrons and protons. Electrons revolve around the nucleus. Electrons are negatively charged, protons are positively charged, and neutrons are neutral. The electron mass is the mass of the rest electron, also known as the invariant mass of the electron.

Learn more about proton here:-https://brainly.com/question/1805828

#SPJ1

Answer:

It also contains other gases, including carbon dioxide and helium, and various pollutants (both gases and solids).

Answer: A.

Explanation: When light passes through a small hole, it creates an inverted image on the opposite side. In this case, since the arrow is pointing up, the inverted image will appear pointing down on the opposite wall. Furthermore, since the box has a hole on its left side, the inverted image will be shifted towards the left.

Answer:

I'm sorry, you didn't post the pictures.

Answer:

the other one is correct...

a. oxidized

b. reducing agent

Explanation:

edge 2021 just did it

The sodium in the given reaction is oxidized from Na to Na⁺.

Oxidation can be described as a process that involves the addition of oxygen or an electronegative element or the removal of hydrogen atoms or any electropositive element. Oxidation can be defined as the reaction in which an atom or ion loses its electrons.

The reduction can be defined as a reaction that involves the addition of hydrogen or the removal of oxygen or any electronegative element. The reduction can also be defined as the reaction in which an atom or ion gains electrons.

In the given chemical reaction of the formation of NaCl:

\(2Na + Cl_2\longrightarrow 2NaCl\)

In this chemical reaction the sodium is oxidized as shown below:

\(Na\longrightarrow Na^+ +e^-\)

In this chemical reaction the Chlorine is reduced as shown below: \(Cl_2 +2e^-\longrightarrow 2Cl^-\)

Therefore, sodium is oxidized in the given reaction.

Learn more about oxidation, here:

https://brainly.com/question/16976470

#SPJ2

Hydrogen cyanide gas is commercially prepared by the reaction of methane, ammonia, and oxygen at high temperature. The other product is gaseous water.

Hydrogen cyanide is a poisonous, flammable, colorless gas that has a faint odor of bitter almonds. The gas has a boiling point of 26 °C (78.8 °F) and a melting point of -14 °C (6.8 °F).Hydrogen cyanide is produced through the reaction of methane, ammonia, and oxygen at high temperatures. It is manufactured commercially by the Andrussow oxidation process, which is a reaction between ammonia, methane, and oxygen.

                              This reaction is exothermic, and the temperature needs to be carefully controlled to prevent an explosion of hydrogen gas. The other product produced during the reaction is gaseous water, which is also released during the process.

                                    The hydrogen cyanide is then separated from the water by distillation. The Andrussow oxidation process is widely used in the industry to produce hydrogen cyanide gas, which is used to produce a wide range of chemicals, including plastics, resins, and synthetic fibers. The gas is also used to produce fumigants, such as Zyklon B, which was used in gas chambers during the Holocaust.

Learn more about Hydrogen cyanide gas

brainly.com/question/30640556

#SPJ11

Answer:

(1)  methanol is also known as methyl alcohol.

    CH3-OH

    term "meth" means one that's why only one carbon atom are there.

(2)   Ethanoic acid has the functional group of carboxylic acid which is           (-COOH).

The term "eth" means two that's why two carbon atoms are there.

CH3-CH2-COOH

(3)   Ethanol is an alcohol that has a functional group of alcohol that is (-OH)

       The term "eth" means two that's why two carbon atoms are there.

         CH3-CH2-OH

(4) Butanoic acid is a carboxylic acid that has a functional group of             (-COOH)

The term "But" means four that's why four atoms of carbon are there.

       CH3-CH2-CH2-COOH

The question must be Write the formula of

1. Methanol

2. ethanoic acid

3 ethanol

4. butanoic acid

Read more about it;

https://brainly.com/question/21245990

The chemist can conclude that the liquid is gaining heat or experiencing an increase in thermal energy.

Thermal energy in chemistry is the energy transferred from one object to another due to a temperature difference. This type of energy is also known as heat energy and is associated with the motion of molecules within an object. At the molecular level, thermal energy can be seen as the kinetic energy of the molecules which are constantly in motion. When two objects with different temperatures come into contact, heat energy is transferred from the object with the higher temperature to the object with the lower temperature. This process continues until both objects reach thermal equilibrium, meaning that the temperatures of both objects are equal. Thermal energy can also be created by the friction between two objects, or by the combustion of a fuel.

From this observation, the chemist can conclude that the liquid in the vat is undergoing a chemical reaction. To determine the exact nature of the reaction, further analysis would be needed. This could include measuring the rate of temperature increase, the products of the reaction, and the reaction enthalpy.

To learn more about thermal energy

https://brainly.com/question/19666326

#SPJ4

Answer:

1232 g of carbon dioxide are formed

Explanation:

As octane is being burned it would be combustion reaction.

writing the balanced equation:

C8H18 + 25/2 O2 →  9 H2O + 8 CO2

now stepping up mole ratio from the balanced equation:

                   moles of octane    :      moles of carbon dioxide

                               1                  :                    8

                                3.5             :                    X

X = 3.5 x 8 = 28

therefore when 3.5 moles of octane are burned in air 28 moles of carbon dioxide are evolved.

now in order to calculate the mass of CO2 formed

molar mass of CO2 = 12 + (16 x 2) = 44g

now calculating the mass of 28 moles:

                          moles : mass

                              1      : 44 g

                              28  :   X

X = 28 x 44 = 1232 g

1232 g of CO2 are formed

Answer:

An organelle is a structure within a cell which has specific jobs to peform in the cell (it functions like an organ for our body, except it is within the cell itself!)

Explanation:

The organelles in our cells do a lot for us, and they are extremely important for our survival! The organelle ribosome helps assemble protiens, and another organelle called the mitochondria produces chemical energy called ATP (adenosin triphosphate). Perhaps the most important organelle is our nuclei, which store all of our DNA and genetic information! (Note- I'm not listing all of our organelles and their functions here, but you can find a lot more!)

Answer:

i dont know

Explanation:

Answer:

they carry basic genetic material like DNA

Answer:

Chromosomes are thread-like structures in which DNA is tightly packaged within the nucleus. DNA is coiled around proteins called histones, which provide the structural support. Chromosomes help ensure that DNA is replicated and distributed appropriately during cell division.

Reproduction variation is a natural propensity that paves the road for evolution. Variation is little in an asexually producing organism.

The majority of animals are diploid creatures (their somatic, or body, cells are diploid), and meiosis produces haploid reproductive (gamete) cells. The vast majority of animals reproduce sexually.

Reproduction variation is a natural propensity that paves the road for evolution. Variation is little in an asexually producing organism. Clones, or perfect replicas of an organism, are produced. But within a sexually reproducing organism, the likelihood of variation is relatively great.

To know more about reproduction, here:

https://brainly.com/question/7464705

#SPJ1