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2 years ago

C-12 has 6 protons. How many neutrons does C-13 have? A. 6 B. 7 C. 13 D. 19

Chemistry

2 answers:

atroni [7]2 years ago

8 0

Answer:

B-7

Explanation:

13-6=7

klio [65]2 years ago

5 0

1 to 2= 1 proton 12\2=6 protons add one neutron you have 6 still unless you add two then you would have 7

The answer is A). 6

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The conversion of cyclopropane to propene in the gas phase is a first-order reaction with a rate constant of 6.7 x 10-4 s -1 at

denpristay [2]

Answer:

$C_f=0.1755M$

Explanation:

Hello,

Based on the information and the units of the given data, the integrated rate law turns out into:

$\frac{dC}{dt}=-kC\\ C_f=C_0exp(-kt)\\C_f=0.25M*exp(-6.7x10^{-4}s^{-1}*8.8min*\frac{60s}{1min} )\\C_f=0.1755M$

Best regards.

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2 years ago

3. If we remember seeing something happen, we can trust that it happened just as we think it did. True or False

djverab [1.8K]

$\huge{ \underbrace{ \overbrace{True}}}$

$\huge\mathfrak\purple{Hope \: it \: helps}$

Note : Because Many of My Dreams came true and I realized.

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2 years ago

Which option lists the layers of the rainforest in the correct order from top to bottom?

andrey2020 [161]

Answer: B.

Explanation:

Trust me already took the quiz on it its B.

8 0

2 years ago

Read 2 more answers

A mixture of 14.0 grams of H2, 84.0 grams of N2, and 64.0 grams of O2 are placed in a flask. The partial pressure of the O2 is 7

Hitman42 [59]

Answer:

$P_{tot}=465.27torr$

Explanation:

Hello there!

In this case, according to the given information, it will be possible for us to use the Dalton's law, in order to solve this problem. However, we first need to calculate the mole fraction of oxygen by firstly calculating the moles of each gas:

$n_{H_2}=\frac{14.0g}{2.02g/mol} =6.93mol\\\\n_{N_2}=\frac{84.0g}{28.02g/mol}=3.00mol\\\\n_{O_2}=\frac{64.0}{16.00g/mol} =2.00mol$

Next, we calculate such mole fraction as follows:

$x_{O_2}=\frac{2}{6.93+3+2} =0.168$

Then, given the following equation:

$P_{O_2}=P_{tot}*x_{O_2}$

So we solve for the total pressure as follows:

$P_{tot}=\frac{P_{O_2}}{x_{O_2}} \\\\P_{tot}=\frac{78.00torr}{0.168} \\\\P_{tot}=465.27torr$

Regards!

6 0

2 years ago

which equation is set up correctly to determine the volume of a 1.5 mole sample of oxygen gas at 22 C and 100kPa

Murljashka [212]

Under STP condition, the gas has a rule of 22.4 L per mole. And according to the ideal gas law, V1/T1=V2/T2. Under STP, 1.5 mol gas has volume of 33.6 L. So the volume under 22 C is 33.6*295/273=36.3 L.

7 0

3 years ago