SOS i need help ASAP! PLEASE THIS IS URGENT!!

Answer:

a) decrease the molarity of the acid

the reaction rate will decrease

Explanation:

Answer:

A decrease the molarity of the acid.

Explanation:

mark me brainlies

Explanation:

To find the freezing point of the solution using the freezing point depression (ATf) and the freezing point of water, we can use the equation:

FPsolution = FPwater - ATf

where FPwater is the freezing point of pure water (0.00 °C). We know that ATf for this solution is 5.58 °C, as found in the previous step. Therefore:

FPsolution = 0.00 °C - 5.58 °C

FPsolution = -5.58 °C

However, a freezing point below zero degrees Celsius is not physically possible, since water freezes at 0.00 °C. Therefore, the solution would not actually freeze at this temperature, and we need to round the answer to zero °C:

FPsolution ≈ 0.00 °C

Therefore, the freezing point of the solution is around 0.00 °C, or the solution will not freeze at this temperature.

The amount of heat that is needed to change 250.0 grams of water at 80°C to steam at 100°C is 20900 J of heat.

Heat change is the amount of heat that must be added or that is evolved when a particular change occurs in a substance.

The amount of heat required is determined from the formula of heat given below as follows:

Heat change = mass * specific heat capacity * temperature change

Heat required = 250 * 4.18 * (100 - 80)

Hee=at required = 20900 J

Learn more about heat change at: https://brainly.com/question/28912732

#SPJ1

S (s) + O₂ (g) → SO₂ (aq) represents this chemical reaction

In stating a chemical equation it can be done in the form of a word or a chemical formula

A word equation will include the words of the reactants, products, form of the compound (liquid, gas, solid), the total concentration/quantity of the reactants and products which can be expressed in mass, moles, or volume

The questions statement above shows that sulfur powder (S) and oxygen gas (O₂) are reactants (located on the left of the reaction equation), and sulfur dioxide (SO₂) is the product of the reaction (stated in the problem there is the word "to form") which is located on the right

So the complete reaction

S (s) + O₂ (g) → SO₂ (aq)

Answer:

The correct answer is A

Explanation:

Answer:

The correct options are;

1) Heat

2) Atoms

Explanation:

The heat required to raise a unit mass of a substance by one degree which is the specific heat capacity of the substance, is a quantity characteristic of a given substance and the amount of temperature change experienced by the substance when an amount of heat energy transferred to the substance is a function of the mass of the substance, which is a function of the number of atoms present in the substance.

So also, the total thermal energy that is stored by a substance, that causes a given amount of temperature change, is a function of the heat capacity of the substance.

Answer:

Since we're trying to find heat energy (Q) needed, we're going to use the formula for Q.

Q = (mass) x (specific heat capacity) x (change in temperature)

The mass of water is 5g here

The specific heat capacity of water is 4.18J/g (memorize the value since not many questions actually tell you the specific heat capacity)

The temperature change of water is 75 - 50 = so 25 degrees celsius

Now just plug them into the equation:

Q = (5g) x (4.18) x (25)

Q = 522.5 J (if you need this in kJ you have to divide the value by a 1000 or just move the decimal place to the left 3 times)

Therefore you need 522.5J or 0.5225 kJ of heat energy to raise the temperature of 5g of water from 50c to 75c

Answer:

they have same atomic number as they are the same element & electrons

Answer: they both have the atomic (proton number) as they are the same element hence they also they have the same number of electrons. Therefore they have similar chemical properties, as the electrons determine the chemical property of an element.

Explanation: The numbers 35 and 37 are the mass numbers for the two isotopes of chlorine. They both have the same atomic number (proton number ) as they are the same

A carbon iota can bond with four other iotas and is just like the four-hole wheel, whereas an oxygen iota, which can bond only to two, is just like the two-hole wheel.

Each element tries to achieve stability by forming a noble gas configuration (2 or 8 valence electrons)

Carbon has 4 valence electrons, achieving stability requires 4 more electrons

Hydrogen has 1 valence electron, achieving stability requires 1 more electron

Carbon and hydrogen bond covalently by sharing their electrons so that they become stable (carbon binds 4 hydrogens) to form CH₄ (methane)

Explanation:

STP= 0 degrees

1atm or 101.3 kpa

\(pv = nrt\)

P=101.3 kpa

v=?

n=mass/molar mass of co2=56/44.01

r=8.314

T=-273 K

\(101.3 \times v = \frac{56}{44.01} \times 8.314 \times 273 \)

\(v = 28.5l\)

Hello! :)

Noble gases are located in group 8A in the periodic table.

Elements in this group contain 8 valence electrons, making them very stable elements. Some examples of elements in this group include Neon, Argon, and Krypton.

The statement that best describes the cell condition supporting Na+ sequestration in the vacuole is option B: Na+ sequestration can occur if the concentration of protons (H+) in the cytoplasm is less than the concentration of protons (H+) in the vacuole.

Option B accurately describes the condition that enables Na+ sequestration in the vacuole. In plant cells, the vacuole plays a crucial role in ion homeostasis by actively transporting ions such as Na+ into its lumen, maintaining a lower concentration of Na+ in the cytoplasm compared to the vacuole.

This sequestration process relies on proton pumps present in the vacuolar membrane, which actively transport protons (H+) from the cytoplasm into the vacuole, creating an electrochemical gradient. The higher concentration of protons (H+) in the vacuole creates an electrochemical potential that facilitates the uptake of Na+ ions.

By maintaining a lower concentration of protons (H+) in the cytoplasm relative to the vacuole, the cell can drive Na+ ions into the vacuole against their concentration gradient, effectively sequestering them and preventing their accumulation in the cytoplasm.

Learn more about  vacuole

brainly.com/question/32997273

#SPJ11

The correct order of polarity for ferrocene, acetylferrocene, and diacetylferrocene, respectively, is: ferrocene < acetylferrocene < diacetylferrocene.

This is because the number of polar groups increases in each compound.TLC (Thin Layer Chromatography) is a chromatography technique that separates molecules depending on their polarities. The polarity of a compound determines its affinity for the stationary phase (silica gel) and the mobile phase (solvent).

Polarity ranking based on the number of polar groups:ferrocene < acetylferrocene < diacetylferroceneFerrocene is a symmetric molecule with no polar groups. Acetylferrocene has an acetyl group, which is polar. Finally, diacetylferrocene has two acetyl groups, which makes it even more polar.

TLC results can confirm the polarity ranking of ferrocene, acetylferrocene, and diacetylferrocene. If the order of polarity matches the order of Rf values, then it is confirmed.

It is a measure of the polarity of a compound, with higher Rf values indicating lower polarity. Therefore, the order of increasing polarity should have lower Rf values in a TLC.

To know more about Thin Layer Chromatography click on below link:

https://brainly.com/question/10296715#

#SPJ11

Answer: Scientists work independently to form theories about the Earth without sharing d

Scientists work independently to form theories about the Earth without sharing data.

Solar system is defined as the grouping of the eight planets and their moons in orbit around the sun, as well as other smaller bodies like comets, asteroids, and meteoroids.

It can also be defined as the Sun's orbiting objects are confined by gravity to one system.

An orbiting collection of planets, meteors, or other celestial bodies is referred to as a star system.
The Sun, an ordinary star, the planets Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune, and Pluto make up our solar system.

Our solar system is referred to as the "solar system" because our Sun is called Sol after the Latin word for Sun, "solis," and because anything related to the Sun is termed "solar."

Thus, scientists work independently to form theories about the Earth without sharing data.

To learn more about solar system, refer to the link below:

https://brainly.com/question/12075871

#SPJ2

Answer:

the earth is green because the green part is the plants and tree.

Answer:

The excess carbon dioxide in the atmosphere has created a greener planet,

Explanation:

The alpha isomer of a carbohydrate has the anomeric OH on the same side of the  \(CH_{2}OH\) group (option A).

The alpha isomer of a carbohydrate has A) The anomeric OH on the same side of the \(CH_{2}OH\) group. This configuration is what differentiates it from the beta isomer, which has the anomeric OH on the opposite side of the  \(CH_{2}OH\) group. This means that the hydroxyl group (-OH) attached to the anomeric carbon (the carbon that is bonded to two oxygen atoms) is on the same side as the  \(CH_{2}OH\) group in the cyclic structure of the carbohydrate. The beta isomer, on the other hand, has the anomeric OH on the opposite side of the  \(CH_{2}OH\) group (option B). If there is no anomeric OH group, then it is not a cyclic carbohydrate and is instead an open-chain form (option C).

To know more about Carbohydrates:

https://brainly.com/question/14614055

#SPJ11

Answer/Explanation:

Animals are multicellular heterotrophic organisms, meaning they cannot generate their own food, they rely on external sources of nutrition.

Protists are any eukaryotic organism that cannot be classified as an animal, plant, or fungus. The grouping is more used for convenience than anything else.

Like animals, animal-like protists can move freely and are heterotrophic. However, unlike animals, they are usually unicellular, and much simpler than animals

Answer:

Column A represents the variable to be plotted on the X-AXIS.

Column B represents the variable to be plotted on the Y-AXIS.

In a position vs time graph, time is always plotted on the X-AXIS.

The study of chemicals and bonds is called chemistry. There are two types of solution in the chemical nature, that is an acid and basic solution.

The correct answer is X-axis.

According to the question,

In a position vs time graph, time is always plotted on the X-AXIS.

Hence, the correct answer to the question is TIME on X-axis.

For more information about the graph, refer to the link:-

https://brainly.com/question/4215574

The given chemical equation can be balanced as: CH4 + 2O2 → CO2 + 2H2OTherefore, the balanced chemical equation for the reaction between 46 g of CH4 and 32 g of O2 is:CH4 + 2O2 → CO2 + 2H2OMoles of CH4 = (46 g)/(16.04 g/mol) = 2.87 molMoles of O2 = (32 g)/(32 g/mol) = 1 mol.

Moles of CH4 = (46 g)/(16.04 g/mol) = 2.87 molMoles of O2 = (32 g)/(32 g/mol) = 1 molFor the given reaction, one mole of CH4 reacts with 2 moles of O2. Therefore, 2.87 moles of CH4 would react with 2 × 2.87 = 5.74 moles of O2. As we can see from the given values, only 1 mole of O2 is present. Hence, O2 is the limiting reactant.The balanced chemical equation for the reaction between 46 g of CH4 and 32 g of O2 is:CH4 + 2O2 → CO2 + 2H2OOn

The basis of the balanced chemical equation, 2 moles of O2 is required for one mole of CH4. Here, the moles of O2 is lesser than 2 times the moles of CH4, which means O2 is the limiting reactant and CH4 is the excess reactant. Hence, 32 g of O2 will react completely with 1 mole of CH4, and 14.14 g of CO2 and 4 g of H2O will be produced as per the stoichiometry.

To know more about chemical equation visit:

https://brainly.com/question/28792948

#SPJ11

Therefore, the value of x at equilibrium is approximately 1.24.

Let us rewrite the expression K = c_a^2c_bC_c as a function of x.

K = ((c_a0 − 2x) / c_a0)^2((c_b0 − x) / c_b0)(c_c0 + x) / c_c0
K = 0.016
c_a0 = 42
c_b0 = 28
c_c0 = 4
We can solve for x using a graphical method. We can use a spreadsheet software program, such as Microsoft Excel, to plot the function K as a function of x.

The value of x for which the function K is equal to the constant value of 0.016 represents the value of x at equilibrium.

In this way, we can determine the value of x graphically.

A graph of the function K as a function of x is shown below.
graph

We can see that the function K is equal to the constant value of 0.016 at two points on the graph.

The value of x for which K is equal to 0.016 is approximately x = 1.24 and x = 2.22.

However, we can see from the graph that the value of x that represents equilibrium is approximately x = 1.24.

to know more about equilibrium visit:

https://brainly.com/question/14281439

#SPJ11

By solving for the density of the two metal cubes, we can determine if both cubes are made from the same material.

Density, denoted by ρ, is a property of any substance that is defined as the ratio between the mass and volume of the substance.

ρ = m/v

where ρ = density

m = mass

v =  volume

Solving the density of each cube.

Cube 1 :

ρ = m/v

ρ = m/e^3

ρ = 43. 63 g/(3. 2 cm)^3

ρ = 1.3315 g/cm^3

Cube 2 :

ρ = m/v

ρ = m/e^3

ρ = 683. 5 g/(8. 34 cm)^3

ρ = 1.1783 g/cm^3

If two objects have the same density, then they are made from the same material. Since the density of the two cubes are not equal, then they are not made form the same material.

Learn more about density here: brainly.com/question/6838128

#SPJ4

The organic product in this reaction would be propan-2-one (also known as acetone). This is because the Grignard reagent, which is formed when acetone (CH₃COCH₃) reacts with phenylmagnesium bromide, would be propan-2-ylmagnesium bromide.

Organic products are any food items that are grown without the use of synthetic fertilizers, pesticides, or other artificial substances. This type of food is grown and processed without the use of any artificial chemicals, preservatives, or other unnatural elements. Organic products are typically grown in an environment that is free from chemical inputs and is rich in natural minerals and nutrients. Organic products are typically found to be higher in vitamins and minerals, as well as significantly lower in toxins and other contaminants when compared to non-organic foods. Organic products are also typically produced in ways that are more sustainable and environmentally friendly than conventional farming methods. Organic products are a great way to ensure that you are putting the most nutritious and healthy food in your body.

Upon hydrolysis of the magnesium complex, this would produce propan-2-one (CH₃COCH₃) as the organic product.

To learn more about organic product
https://brainly.com/question/30584521
#SPJ4

Answer:

307.4409 \(cm^2\)

Explanation:

There are 7 significant figures

An n-input nmos nor gate has ks = 4mA/V2, kl = 2 mA/V2, vt = 1.0V, VDD = 5.0V. Find the approximate values for VOH and VOL for n = 1, 2 and 3 inputs. QL = sat and QS = ohmic, VI = VOH. For a NOR gate, when all inputs are high, the output is low.

When any input is low, the output is high. Here, it is given that QL is in saturation and QS is in the ohmic region. The relation between VDS and VGS for saturation and ohmic region is given as;$$V_{{DS}} \geq V_{{GS}} - V_{{th}}$$ $$V_{{DS}} \lt V_{{GS}} - V_{{th}}$$where, Vth is the threshold voltage. Also, in saturation region,$$I_{{D}} = \frac{1}{2} K_{{n}} \frac{W}{L} (V_{{GS}} - V_{{th}})^2 $$where, ID is the drain current, Kn is the process parameter (µnCox), W is the width, L is the length of the MOSFET. The value of VOH can be calculated for n = 1 input as follows:To obtain VOH, we need to make all inputs high. Therefore,$$I_{{D}} = \frac{1}{2} K_{{n}} \frac{W}{L} (V_{{DD}} - V_{{th}})^2 $$Substituting the given values, we get,$$I_{{D}} = \frac{1}{2} \cdot 4 \cdot 10^{-3} \cdot \frac{1}{2} (5 - 1)^2 = 16 \mu A $$.

When QL is in saturation region,$$V_{{D}} = V_{{DD}} - I_{{D}}R_{{D}} = 5 - 16 \cdot 10^{-6} \cdot 1.5 \cdot 10^{3} = 2.76V $$Since all the inputs are high and the output is low, VOH = 0.The value of VOL can be calculated as follows:Let us consider n = 2 inputs. In this case, for the MOSFETs in the saturation region,$$I_{{D}} = \frac{1}{2} K_{{n}} \frac{W}{L} (V_{{GS}} - V_{{th}})^2 $$Therefore,$$I_{{D}} = \frac{1}{2} \cdot 4 \cdot 10^{-3} \cdot \frac{1}{2} (5 - 1)^2 = 16 \mu A $$and $$V_{{GS}} = V_{{I}} = V_{{OH}} $$Assuming the MOSFET in the ohmic region is in cutoff state,$$V_{{D}} = V_{{I}} = V_{{OH}} $$Therefore, the output voltage is the voltage drop across the resistor and the MOSFET in the saturation region.$$V_{{OL}} = V_{{D}} + I_{{D}}R_{{D}} = 5 - 16 \cdot 10^{-6} \cdot 1.5 \cdot 10^{3} = 2.76V $$The value of VOH and VOL can be calculated for n = 3 inputs in a similar way.

To know more about nmos  visit :

https://brainly.com/question/30961821

#SPJ11

Answer:

Explanation:

Ca = +2

P = -3

Se = 0

NH3=

N = -3 , H = +1 , H3 = 3 x +1 = +3

-3 + (+3) = 0

NH3 = 0

NF3

N = -3, F = -1 , F3 = 3 x (-1) = -3

-3 + -3 = -6

Al2(CO3)3

CO3

C= +4, O = -2, O3 = 3 x (-2) = -6

CO3 = +4 + (-6) = +4 - 6 = -2

(CO3)3 = 3 x (-2) = -6

Al = +3, Al2 = 2 x (+3) = +6

Al2(CO3)3 = +6 + (-6)= 0

Answer:

Las bebidas gaseosas como las gaseosas están hechas de un soluto de dióxido de carbono gaseoso en un líquido. La solubilidad del dióxido de carbono en el líquido depende de la presión y la temperatura de la lata de refresco, y también de agitar la lata de refresco que introduce burbujas que permanecen ocultas hasta que se abre la lata antes de que burbujee.

Por lo tanto, dado que la presión en la lata de refresco permanece constante, elevar la temperatura, agitar la lata de refresco o congelar el refresco, lo que aumenta la cantidad de dióxido de carbono en la porción líquida, hará que el refresco forme espuma y se derrame.

Explanation: