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lesya [120]
3 years ago
9

Which statement about covalent bonds and electrons is true?

Chemistry
2 answers:
k0ka [10]3 years ago
4 0
 Are these the following choices the ones you have?

A. The atom with more electromagnetically takes more than its share of the electrons. 
<span>B. Electrons in covalents bonds are shared equally between both atoms. </span>
<span>C. All covalent bonds are the same. </span>
<span>D. If an atom loses an electron, it is still neutral.</span>
<span />
Illusion [34]3 years ago
3 0
<span>D) Eectrons in covalent bonds are not always shared equally.</span>
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Protons/Electrons: 92

Neutrons: 140

***REMEMBER: There is always the same amount of protons and electrons. :)

7 0
3 years ago
Which two options are examples of waves refecting
sergey [27]

Answer:

A voice echo

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Explanation:

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8 0
2 years ago
A gas mixture with a total pressure of 745 mmHg contains each of the following gases at the indicated partial pressures: CO2, 24
Setler79 [48]

<u>Answer:</u>

<u>For Part A:</u> The partial pressure of Helium is 218 mmHg.

<u>For Part B:</u> The mass of helium gas is 0.504 g.

<u>Explanation:</u>

  • <u>For Part A:</u>

We are given:

p_{CO_2}=245mmHg\\p_Ar}=119mmHg\\p_{O_2}=163mmHg\\P=745mmHg

To calculate the partial pressure of helium, we use the formula:

P=p_{CO_2}+p_{Ar}+p_{O_2}+p_{He}

Putting values in above equation, we get:

745=245+119+163+p_{He}\\p_{He}=218mmHg

Hence, the partial pressure of Helium is 218 mmHg.

  • <u>For Part B:</u>

To calculate the mass of helium gas, we use the equation given by ideal gas:

PV = nRT

or,

PV=\frac{m}{M}RT

where,

P = Pressure of helium gas = 218 mmHg

V = Volume of the helium gas = 10.2 L

m = Mass of helium gas = ? g

M = Molar mass of helium gas = 4 g/mol

R = Gas constant = 62.3637\text{ L.mmHg }mol^{-1}K^{-1}

T = Temperature of helium gas = 283 K

Putting values in above equation, we get:

218mmHg\times 10.2L=\frac{m}{4g/mol}\times 62.3637\text{ L.mmHg }mol^{-1}K^{-1}\times 283K\\\\m=0.504g

Hence, the mass of helium gas is 0.504 g.

6 0
3 years ago
Can someone help me on 1 and 2
pav-90 [236]
I believe 1 is growth and 2 is reproduction. Hope this helps.
6 0
3 years ago
Read 2 more answers
Ferrous ammonium sulfate is what kind of test method.
ratelena [41]
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An FAS-DPD titration is as simple as a test for total alkalinity or calcium hardness. A buffered DPD indicator powder is added to a water sample and reacts with chlorine to produce the pink color characteristic of the standard DPD test.

Hope this it gang
3 0
2 years ago
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