How many grams are in 21.7 mol of H2O?

Decomposition reactions occur when single compounds disintegrate into multiple easier-to-process materials chemically.

As opposed to synthesis and combination methods that construct new compounds from smaller ones; here, large reactants cleave apart due to external factors such as heat energy input/output patterns and mediated by catalysts.

Learn about Single-Replacement Reaction here https://brainly.com/question/28909116

#SPJ1

Answer:

if you meant 3.82* 10^24, the answer is 6.34551495 moles

if you meant 3.28*1024, the answer is 6.49780731*10^-21 moles

since you're going from molecules to moles, you need to divide by Avogadro's number which is 6.02*10^23

The kind of material used to bake food will influence how much energy is required to heat it up and how quickly it cools. Due to the fact that metal conducts heat more effectively than glass, heating up metal pans often takes longer than heating up glass ovenware.

This implies that the metal absorbs heat from the oven more rapidly and effectively, needing more energy to attain the appropriate temperature. However, oven-safe glass will cool down more quickly than metal.

This is due to the fact that glass is a poor heat conductor, which means it takes more time for the heat to be absorbed by the glass. The glass will shatter after the dish is cooked and the heat is turned off.As the heat takes longer to dissipate, the metal cools down more quickly than the other materials.

In conclusion, glass cools more quickly than metal and requires less energy to heat up than oven-safe metal. This is because metal absorbs heat from the oven more rapidly and effectively than glass since metal is a stronger heat conductor than glass.

However, because glass is a poor conductor of heat, it takes longer for the food to cook and the heat to be absorbed. The glass cools down more quickly than the metal when the heat is gone.

Learn more about conductor   at:

https://brainly.com/question/14405035

#SPJ3

Aristotle focuses only on propositions, assertions, or statements that are (or could be) true or untrue (apophanseis).

Like the majority of logicians after him, he concentrates on a small number of quantifiers. He asserts that each premise is either general, specific, or ambiguous. Therefore, a proposition (protasis) is a statement that affirms or denies something of something, and it might be general, specific, or indefinite. When I say something is universal, I mean that it belongs to everything or to nothing; when I say something is particular, I mean that it belongs to some people or not to some people or to all; and when I say something is indefinite, I mean that it does or does not belong without any indication that it is universal or particular, for example, "contraries are subjects of the same science" or "pleasure is not good."

Learn more about concentrates here-

https://brainly.com/question/10720472

#SPJ4

The elements arranged in increasing order of the most positive electron affinity for each group are:

(a) Li, Na, K

(b) I, Br, Cl, F

(c) Ba, Ca, Si, P, O

(a) Li, Na, K: In this group, the electron affinity increases as we move from left to right in the periodic table. Therefore, the elements arranged in increasing order of the most positive electron affinity are Li, Na, and K.

(b) F, Cl, Br, I: In this group, the electron affinity generally increases as we move from left to right and from bottom to top in the periodic table. Therefore, the elements arranged in increasing order of the most positive electron affinity are I, Br, Cl, and F.

(c) O, Si, P, Ca, Ba: In this group, the electron affinity generally increases as we move from left to right and from top to bottom in the periodic table. Therefore, the elements arranged in increasing order of the most positive electron affinity are Ba, Ca, Si, P, and O.

Know more about Electron affinity here:

https://brainly.com/question/30888367

#SPJ8

Answer:

Likely an issue with the mitral valve.

Explanation:

If I read this correctly, you are likely referring to mitral regurgitation, which is a process where your mitral value does not close tightly enough to stop the blood to flow into left atrium.

Normally, when the left ventricle is full, the mitral valve shuts to prevent blood blood from flowing backward into the atrium while the ventricle contracts, and this allows for blood to go to aorta and to body. According to question since the process is reversed, I am gonna go out on a limb and say mitral valve is likely the structure affected by this since and how I came to conclusion is all the explaintion I did earlier.

Answer:

b?

Explanation:

thanks for free points lol

Answer:

\(\boxed {\boxed {\sf About \ 2.96 \ moles \ of \ Argon}}\)

Explanation:

To convert from grams to moles we must use the molar mass, which is found on the Periodic Table.

Use the molar mass as a ratio.

\(\frac{39.9 \ g \ Ar}{1 \ mol \ Ar}\)

Multiply by the given number of grams: 118

\(118 \ g \ Ar *\frac{39.9 \ g \ Ar}{1 \ mol \ Ar}\)

Flip the fraction so the grams of argon will cancel each other out.

\(118 \ g\ Ar * \frac{1 \ mol \ Ar}{39.9 \ g \ Ar}\)

\(118 * \frac{ 1 \ mol \ Ar}{39.9 \ g \ Ar}\)

\(\frac {118 \ mol \ Ar }{ 39.9 }\)

\(2.95739348 \ mol \ Ar\)

The original measurement of grams had 3 significant figures, so our answer must have 3 sig figs.

For the number we calculated, that is the hundredth place. The 7 in the thousandth place tells us to round the 5 to a 6.

\(2.96 \ mol \ Ar\)

There are about 2.96 moles of Argon in 118 grams.

Answer:

incorrect

Explanation:

The statement "A solution that contains 50 g of [unknown substance] in 100 mL of water at 80 degrees C is" is incomplete and does not provide enough information to answer the question. We need to know what substance is dissolved in the water in order to determine the properties of the solution, such as its concentration and behavior at a certain temperature. Please provide more information or context to the question so that I can assist you better.

Answer: H2O2

Explanation: The formula that represents hydrogen peroxide is H2O2

Answer:

-96.6°C

Explanation:

Given:

        mass CCl4 = 530.0 g * (1 kg / 1000)

        mass CCl4 = 0.5300 kg

First calculate the molality (m) of the solute, which is the moles of solute divided by the kg of solvent (\(\frac{moles}{kg}\)):

molality CHCl3 = (mass moles CHCl3) / (mass CCl4 in kg)

molality CHCl3 = (1.31 mol) / (0.5300 kg)

molality CHCl3 = 2.471698m

Decrease in freezing point of solvent = (Kf) * (molality of solute)

Decrease in freezing point of CCl4 = (Kf) * (molality CHCl3)

Decrease in freezing point of CCl4 = (29.8°C/m) * (2.47m)

Decrease in freezing point of CCl4 = 73.6566°C

Then use the molality of the solute to calculate the change in freezing point and subtract the change from the original freezing point.

Freezing point of solution =

(freezing point of pure solvent) - (Decrease in freezing point)

Freezing point of solution = (-22.9°C) - (73.66°C)

Freezing point of solution = -96.6°C

Learn more about freezing point here: brainly.com/question/22888016

Carbonyl bonds are quite polar. Because oxygen is more electronegative than carbon, there is a partial positive charge on the carbon and a partial negative charge on the oxygen. The double bond between carbon and oxygen intensifies this charge separation.

Carbonyl carbon is an electrophile that combines with nucleophiles to form a tetrahedral species. It is the most basic reaction in carbonyl chemistry. You can now add an acid to a carbonyl to make it even HUNGRY for nucleophiles.

Turbo-charged nucleophiles include enamine, enolates, and enols. The alpha carbon atom is the nucleophilic atom.

Despite the fact that that carbon is a double bonded carbon with no lone pair, that position is motivated to donate electrons due to pi donation from the oxygen.

To know more about carbonyl electrophile visit

https://brainly.com/question/28203269

#SPJ4

Answer:

0.000425 kilowatt hour

Answer:

Some of the product is a gas that goes to the atmosphere.

Explanation:

Based on the chemical reaction of baking soda (Sodium bicarbonate: NaHCO₃) with vinegar (Acetic acid: CH₃COOH):

NaHCO₃(aq) + CH₃COOH(aq) → H₂O(aq) +  CO₂(g) + CH₃COONa(aq)

When the reaction occurs, one of the products (CO₂) is a gas that will disappear of the mixture to stay in the atmosphere. That is the reason why there are missing 3 grams.

Answer:

it's volume also decrease

Answer:

a. .125 mol b. 7.25g

Explanation:

a. To get the moles multiply the volume by the molarity.

.5L*.25M=.125mol NaCl

b. The molar mass is provided so multiply the moles by the molar mass to get the amount of grams of nacl.

.125mol*58molar mass=7.25g nacl to make the solution

suspended solids from water

The metal which will reach the highest temperature is the metal with the lowest specific heat capacity.

The amount of heat Q = mcΔT where

Making ΔT subject of the formula, we have

ΔT = Q/mc

Given that Q and m are the same for each metal,

ΔT ∝ 1/c

We see that the temperature change is inversely proportional to the specific heat capacity.

Since the metals are at the same temperature, the metal which will reach the highest temperature is the metal with the lowest specific heat capacity.

So, the metal which will reach the highest temperature is the metal with the lowest specific heat capacity.

Learn more about temperature here:

https://brainly.com/question/16559442

#SPJ12

Na⁺(aq)+OH⁻(aq)+H⁺(aq)+Cl⁻(aq)→ Na⁺(aq) + Cl⁻ (aq) + H⁺ (aq) + OH⁻ (aq) is the total ionic reaction.

The reaction is a process that leads to the chemical transformation of one chemical substance to another.

Just to help to understand what is happening here, here the complete non-ionic reaction is shown

equation for the neutralization reaction of sodium hydroxide ( NaOH ) with hydrochloric acid ( HCl ), write the total ionic equation (also known as the complete ionic equation) by entering both the reactant and the product species, separated by the reaction arrow.

NaOH (aq) + HCl (aq) → NaCl (aq) + H₂O

Now, you have to separate the ionic substances into the ions, which gives the desired answer:

Na⁺(aq)+OH⁻(aq)+H⁺(aq)+Cl⁻(aq)→ Na⁺(aq) + Cl⁻ (aq) + H⁺ (aq) + OH⁻(aq)

To know more about reaction click:

https://brainly.com/question/11231920

#SPJ1

Answer:

Explanation:

To find the number of moles in a substance given it's number of entities we use the formula

\(n = \frac{N}{L} \\\)

where n is the number of moles

N is the number of entities

L is the Avogadro's constant which is

6.02 × 10²³ entities

From the question we have

\(n = \frac{5.67 \times {10}^{24} }{6.02 \times {10}^{23} } \\ = 9.418604...\)

We have the final answer as

Hope this helps you

After experiment number 10, you created equilibrium solutions. In equilibrium solution A, the initial concentration of Pb is 0.00072 M, or  7.2 × 10⁻⁴ M in scientific notation.

To determine the initial concentration of Pb in equilibrium solution A, we need to consider the volumes and concentrations of the reactants involved in the mixture.

The volume of Pb(NO₃)₂ used is 5.00 mL, and its concentration is 0.012 M. Using the formula:

Moles of Pb(NO₃)₂ = volume (L) × concentration (mol/L),

we can calculate the moles of Pb(NO₃)₂ as follows:

Moles of Pb(NO₃)₂ = (5.00 mL × 0.001 L/mL) × 0.012 mol/L = 0.06 × 0.012 mol = 0.00072 mol.

Since each mole of Pb(NO₃)₂ produces one mole of Pb, the initial concentration of Pb is also 0.00072 M.

Therefore, the initial concentration of Pb in equilibrium solution A is 0.00072 M, written in scientific notation as 7.2 × 10⁻⁴ M.

To know more about the equilibrium solutions refer here :

https://brainly.com/question/31823413#

#SPJ11

Complete question :

At the end of experiment 10, you prepared equilibrium solutions. Equilibrium solution A was prepared by mixing: 5.00 mL 0.012 M Pb(NO3)2 2.00 mL 0.030 M KI 3.00 mL 0.20 MKNO Determine the initial concentration of Pb and enter it in the box below: Written in scientific notation, this number should contain Odecimal place(s)

Answer:

molecules gain energ and start to move quickly

Water has highest density at 4∘C. This changes its properties from other simple fluids. When water is heated from 0∘C to 4∘C, the volume of liquid decreases. Thus for this transition, P ΔV is negative.

Answer: The herbicide (weed killer) takes away a plant's ability to get carbon dioxide. This causes the plant to not be able to produce glucose a source of energy for the plants. Even if there are plenty of water, sunlight, and chloroplasts, the photosynthesis process won't be complete without carbon dioxide. Once in the soil, herbicides can suffer alteration in their structure and composition, due to the action of physical, chemical, and biological processes. This action on the herbicides is the one that will determine their activity and persistence in the soil. Plants damaged by soil sterilant herbicides are the least likely to recover. Plants that show signs of growing out of the problem will likely recover. Plants that appear to lose vigor may not. The survival of damaged plants can be increased by reducing other stresses.

Sodium from Na3PO4(aq) could be prepared by electrolysis of the aqueous solution shown. Based on the provided options, the element that could be prepared by electrolysis of the aqueous solution shown

Potassium from KCl(aq)
Here's why:
- Sodium from Na3PO4(aq) and Nitrogen from AgNO3(aq) are not possible because these ions are more stable in solution than undergoing electrolysis.
- Sulfur from K2S04(ed) is not valid as the compound should be K2SO4(aq) and even then, it would produce oxygen at the anode instead of sulfur.
- Oxygen from H2SO4(aq) can be prepared through electrolysis, but this is not an element directly obtained from the compound.
Potassium from KCl(aq) can be prepared by electrolysis. During this process, K+ ions are reduced to potassium metal at the cathode, and Cl- ions are oxidized to chlorine gas at the anode.

Visit here to learn more about electrolysis:

brainly.com/question/12054569

#SPJ11

The property of matter that is conserved in chemical reactions and shown by balanced equations is known as the Law of Conservation of Mass. According to this law, mass can neither be created nor destroyed in a chemical reaction; it can only be transformed from one form to another.For instance, when two substances are combined, they react and form a new substance.

For such more question on chemical reaction

https://brainly.com/question/11231920

#SPJ8

Answer:

Explanation:

1. Mercury’s atmosphere is incredibly thin.

It's thin because the atmosphere is made up of atoms blasted off its surface by the Solar wind and also consist of the stream particles coming from the outer layer of the sun

2. The length of a mercury year is about 1.5 times longer than a mercury a day.

Mercury revolves around the sun very quickly but rotates around its axis very very slowly

3.The temperature range on Mercury is about 590 °C.

During the day, temperatures on Mercury's surface can reach Very High But,  the planet has no atmosphere to retain that heat

Answer:

Answer: Carbon dioxide and Water

Explanation:

» Butane is an alkane. When alkanes undergo combustion [ oxidization ], carbondioxide and water are formed.

We are given –

__________________________________________

Molar Mass of \(\bf K_2SO_4 \) –

\(\qquad\) \(\twoheadrightarrow\bf 39.09 \times 2 + 32 + (16 \times 4)\)

\(\qquad\) \(\twoheadrightarrow\bf 174.2\)

Using formula –

\(\qquad\) \(\purple{\twoheadrightarrow\bf Molarity _{(Solution)} = \dfrac{ W\times 1000}{MV}}\)

\(\qquad\) \(\twoheadrightarrow\bf Molarity _{(Solution)} = \dfrac{ 9.51 \times 1000}{174.2\times 750}\)

\(\qquad\) \(\twoheadrightarrow\bf Molarity _{(Solution)} = \dfrac{9510}{174.2 \times 750}\)

\(\qquad\) \(\purple{\twoheadrightarrow\bf Molarity _{(Solution)} = 0.073M} \)

___________________________________________

As we know that ΔH Reaction o=ΔH fo (Products)−ΔH fo (Reactant)

⟹ΔH Reaction o =−1669−(−822)=−847 kJ/mol

As ΔH ReactioN o<0. So, the reaction is exothermic.

By deducting the total enthalpies of all the reactants from the total enthalpies of the products, the reaction enthalpy is determined. According to mathematics, tH is equal to the sum of the enthalpies of the reactants and the product.

The enthalpy of any reaction, as we already know, depends on the environmental physical parameters like temperature, pressure, etc. Any reaction's standard enthalpy may be determined when both the reactants and the products are present in their standard forms, which is the case for all reaction participants. The enthalpy change that takes place in a system when a substance undergoes a chemical reaction under normal circumstances is hence known as the standard enthalpy of reaction.

Conventionally, every substance's pure form at a pressure of 1 bar is considered to be its standard condition at a given temperature. For instance, liquid ethanol is considered to be at its standard state when it is 298 K and 1 bar of pressure

To be learn more about standard enthalpy refer to :

brainly.com/question/29556033

#SPJ4

To find the percent abundance of the isotope with an atomic mass of 68.916 on the fictional planet Caprica, we need to compare the atomic masses of the two isotopes. Let's denote the percent abundance of the isotope with an atomic mass of 68.916 as x.

Since there are only two isotopes, the percent abundance of the other isotope would be (100 - x).

Now, we can set up the equation based on the weighted average formula:

(68.916 * x) + (70.939 * (100 - x)) = 69.566

Simplifying the equation, we have:

68.916x + 70.939(100 - x) = 69.566

Expanding the equation:

68.916x + 7093.9 - 70.939x = 69.566

Combining like terms:

-2.023x = -7024.334

Solving for x:

x = (-7024.334) / (-2.023)

x ≈ 3474.2

Therefore, the percent abundance of the isotope with an atomic mass of 68.916 on the fictional planet Caprica is approximately 34.7%.

To know more about atomic mass visit:

https://brainly.com/question/32188220

#SPJ11