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3 years ago

What is the name of Se2Cl7?

Chemistry

1 answer:

Monica [59]3 years ago

4 0

Answer:

diselenium heptachloride

Explanation:

Se2Cl7

Se = selenium

Cl = chlorine

Don't forget the "-ide"

Diselenium heptachloride

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A sample of an unknown compound has a percent composition of 52.14% carbon, 13.13% hydrogen, and 34.73% oxygen. Which compounds

Artemon [7]

<h3>Answer:</h3>

The two possible compounds are;

1) Dimethyl Ether H₃C--O--CH₃

2) Ethanol H₃C--CH₂--OH

<h3>Solution:</h3>

Step 1: Calculate Moles of each Element;

Moles of C = %C ÷ At.Mass of C

Moles of C = 52.14 ÷ 12.01

Moles of C = 4.341 mol

Moles of H = %H ÷ At.Mass of H

Moles of H = 13.13 ÷ 1.01

Moles of H = 13.00 mol

Moles of O = %O ÷ At.Mass of O

Moles of O = 34.73 ÷ 16.0

Moles of O = 2.170 mol

Step 2: Find out mole ratio and simplify it;

C H O

4.341 13.00 2.170

4.341/2.170 13.00/2.170 2.170/2.170

2 5.99 1

2 6 1

Hence, Empirical Formula = C₂H₆O

<h3>Result:</h3>

As the molecular mass of compound is not given therefore, we can assume and guess the empirical formula to be the molecular formula. Hence, possible compounds are,

1) Dimethyl Ether H₃C--O--CH₃

2) Ethanol H₃C--CH₂--OH

3 0

3 years ago

If 50.0 g of H2 and 112.5 g of O, react, how many moles of H2O can be produced in the reaction below? 2 H2(g) + O2(g) 2 H2O(g)

Gennadij [26K]

Answer:

250g

Explanation:

4g of H2 produce 20g of H2O/50.0g of H2 produce x the answer is 250g

6 0

3 years ago

A sample of oxygen gas at a pressure of 0.656 atm and a temperature of 27.2 °C, occupies a volume of 10.7 liters. If the gas is

sladkih [1.3K]

Answer:

The correct answer is 0.536 atm.

Explanation:

The formula to use to solve the given question is,

P1V1 = P2V2

Based on the given information, the initial pressure (P1) of the oxygen gas is 0.656 atm, the initial volume (V1) is 10.7 L. The new volume (V2) given is 13.1 L, there is a need to find the new pressure of the gas (P2).

Now putting the values in the above equation we get,

0.656 atm * 10.7 L = P2 * 13.1 L

P2 = 0.656 atm*10.7 L/13.1 L

P2 = 0.536 atm

3 0

3 years ago

Humans (biosphere) harness energy from the wind (____________) by having it spin wind turbines to produce electricity for use on

nataly862011 [7]

<span> D) hydrosphere and geosphere </span>

4 0

4 years ago

Read 2 more answers

NEED HELP ASAP!!! As atmospheric carbon dioxide increases, the amount of carbon dioxide dissolved in the ocean _____.

Dennis_Churaev [7]

Answer:

If temperature stays the same, the amount of carbon dioxide dissolved in the ocean would increase.

Explanation:

The carbon dioxide in the air ( ${\rm CO_{2}}\, (g)$ ) and the carbon dioxide dissolved in the ocean ( ${\rm CO_{2}}\, (aq)$ ) are in a solution equilibrium:

${\rm CO_{2}}\, (g) \rightleftharpoons {\rm CO_{2}}\, (aq)$ .

Assume that the concentration of carbon dioxide in the air ( ${\rm CO_{2}}\, (g)$ ) increased while temperature stayed the same.

By Le Ch $^{}$ atelier's Principle, the solution equilibrium ${\rm CO_{2}}\, (g) \rightleftharpoons {\rm CO_{2}}\, (aq)$ would shift to offset this increase in ${\rm CO_{2}}\, (g)$ concentration. Specifically, this equilibrium would reduce the amont of ${\rm CO_{2}}\, (g)\!$ in the system by converting more atmospheric ${\rm CO_{2}}\, (g)\!\!$ to ${\rm CO_{2}}\, (aq)\!$ dissolved in the ocean. Therefore, the concentration of ${\rm CO_{2}}\, (aq)\!\!$ dissolved in the ocean would increase.

8 0

3 years ago