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3 years ago

4. How many moles of Ca(HCO3)2 are present in 4.6 liters of a 3.5 molarity solution?

Chemistry

1 answer:

weeeeeb [17]3 years ago

8 0

Multiply the volume by molarity to get moles.

3.5 M • 4.6 L = 16.1 mol Ca(HCO3)2

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How to know so many have phosphorus atoms.

anygoal [31]

Answer:Element Phosphorus (P), Group 15, Atomic Number 15, p-block, Mass 30.974. Sources, facts, uses, scarcity (SRI), podcasts, alchemical symbols, videos and ...

Explanation:

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2 years ago

Question 4 of 10

Nastasia [14]

Answer:

Neon and Methane

Explanation:

Nitrogen and Oxygen made up way over half of the atmosphere so it's without a doubt, not those two. Precisely, Nitrogen makes up 78% of the atmosphere while oxygen makes up 21%

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3 years ago

Read 2 more answers

QUESTION 14

AveGali [126]

Within each functional group, the boiling points of members of the group vary according to molecular weight. Therefore, one cannot deduce any functional group from boiling points.

Organic compounds are divided into families called homologous series. Each homologous series has a functional group common to all the members of the series. As a result of this, the chemical properties of all the members of the homologous series are similar.

However, the boiling points of the members of a homologous series vary according the their molecular weights. As such, boiling points can not be used as evidence to classify substances into any particular homologous series.

Summarily, one cannot deduce any functional group from physical properties.

Learn more: brainly.com/question/1078956

7 0

3 years ago

A solution is prepared by dissolving 0.7234 g oxalic acid (H2C2O4) in enough water to make 100.0 mL of solution. A 10.00-mL aliq

marishachu [46]

Answer: The final molarity of the diluted oxalic acid solution is 0.0032 M

Explanation:

Molarity: It is defined as the number of moles of solute present per liter of the solution.

Formula used :

$Molarity=\frac{n\times 1000}{V_s}$

where,

n= moles of solute

Moles= $\frac{\text{Given mass}}{\text{Molar mass}}=\frac{0.7234g}{90g/mol}=0.008moles$

$V_s$ = volume of solution in ml

$Molarity=\frac{0.008\times 1000}{100.0}=0.08$

To calculate the final molarity of the diluted oxalic acid solution

$M_1V_1=M_2V_2$

where,

$M_1\text{ and }V_1$ are the molarity and volume of concentrated oxalic acid solution.

$M_2\text{ and }V_2$ are the molarity and volume of diluted oxalic acid solution.

We are given:

$M_1=0.08\\V_1=10.00mL\\M_2=?\\V_2=250.0mL$

Putting values in above equation, we get:

$0.08\times 10.00=M_2\times 250.0\\\\M_2=0.0032M$

Thus the final molarity of the diluted oxalic acid solution is 0.0032 M

8 0

3 years ago

PLEASE HELP ASAP ONLY HAVE 10 MINUTES. A certain photon of light has a wavelength of 422 x 10 -9 m. What is the frequency of the

Sedaia [141]

Answer:

7.11 x $10^{14}$ Hz

Explanation:

The equation for converting wavelength to frequency is ν=c/λ, or the speed of light over wavelength. The speed of light is 3.00 x $10^{8}$ , and our wavelength here is 422 x $10^{-9}$ . All we have to do now is substitute our given values:

$\frac{3.00x10^{8} }{422x10^{-9}}$

After reduction, our answer comes out to be about 7.11 x $10^{14}$ Hz.

4 0

3 years ago