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4 years ago

What is a base used in toothpaste?

Chemistry

2 answers:

stich3 [128]4 years ago

5 0

Sodium fluoride is used in a lot of toothpastes<span />

Svetlanka [38]4 years ago

3 0

Most of toothpastes<span> includes sodium fluoride,silica,sodium lauryl phosphate,sorbitol,water etc. It may neutralise the acid formation in mouth cavity as well as at teeth gaps.So tooth paste is basic in nature.</span>

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Tin hydrogenooxolate formula

vladimir2022 [97]

Answer:

Tin(IV) Hydrogen Oxalate. Alias: Stannic Hydrogen Oxalate. Formula: Sn(HC2O4)4. Molar Mass: 474.8178. :: Chemistry Applications:: Chemical Elements, Periodic Table.

Explanation:

3 0

3 years ago

Read 2 more answers

A) Calculate the theoretical yield of your product. The theoretical yield should be quoted as a mass, not a number of moles. Uni

Afina-wow [57]

Answer:

See explanation below

Explanation:

First, we need to know the formula of the carvone, which is C₁₀H₁₄O (MM = 150.2 g/mol) and the product which is C₁₀H₁₄O₂ (MM = 166.2 g/mol).

a) We have the initial mass of carvone which is 0.709 g. With this mass, and assuming a mole ratio of 1:1, we can calculate the theorical moles of the product:

C₁₀H₁₄O + HOOH -------> C₁₀H₁₄O₂ + H₂O

Let's calculate the moles of carvone:

n = m/MM

n = 0.709/150.2 = 4.72x10⁻³ moles

As we stated before, we have a 1:1 mole ratio, so the moles of carvone will be the mole of the products, so the moles of the carvone epoxide are 4.72x10⁻³ moles. To get the theorical yield, we just use the molecular mass of the carvone epoxide:

m = 4.72x10⁻³ * 166.2 = 0.784 g

This would be the theorical yield of the product

b) To get the percent of yield, we use the mass of the theorical yield and the actual mass obtained in the experiment:

%yield = exp yield / theo yield * 100

Replacing:

%yield = 0.519/0.784 * 100

%yield = 66.2 %

c) to get the atom economy, we just apply the following expression:

%AE = MM of desired product / MM of reactants * 100

In this case we already have the molecular mass of the product and one reactant. We only need to know the molecular mass of the HOOH which is 34 g/mol. Applying the formula we have:

%AE = 166.2 / (150.2+34) * 100

%AE = 90.2%

6 0

4 years ago

Calculate the root mean square (rms) average speed of the atoms in a sample of xenon gas at 0.15 atm and -55c

GrogVix [38]

Answer:
Vrms is 149.7266 m/sec

Explanation:
The root means square velocity of a gas can be calculated as follows:
Vrms = $\sqrt{ \frac{3RT}{M}}$
where:
R is the ideal gas constant = 8.3145
T is absolute temperature = -55 + 273 = 118 degrees kelvin
M is the molar mass of the gas = 131.293 grams = 0.131293 kg

Substituting with these givens in the above equation, we would find that the Vrms is 149.7266 m/sec

Hope this helps :)

7 0

4 years ago

Choose all the answers that apply.

iogann1982 [59]

Answer:

All the options are correct except "has 7 electrons"

Explanation:

7 0

3 years ago

Read 2 more answers

Given the following data, determine the order of reaction with respect to H2.

alex41 [277]

Answer:

First-order with respect to hydrogen.

Explanation:

Hello!

In this case, considering that the rate law of this reaction can be expressed via:

$r=k*p_{H_2}^m*p_{ICl}^n$

If we want to know m, the order of reaction with respect to hydrogen, we need to relate the experiments 1 and 3 in order to get rid of the pressure of ICl:

$\frac{r_1}{r_3} =\frac{k*p_{H_2,1}^m*p_{ICl,1}^n}{k*p_{H_2,3}^m*p_{ICl,3}^n}$