2 years ago

Convert 45.5 mmHg into kPa

Chemistry

1 answer:

Karolina [17]2 years ago

8 0

Answer:

for anapproximate result , divide the pressure value by 7.501

You might be interested in

The average atomic mass of Eu is 151.96 amu. There are only two naturally occurring isotopes of europium, Eu with a mass of 151.

earnstyle [38]

Answer:

The percentage abundance of Eu isotopes are 52 % and 48 % .

Explanation:

The formula for the calculation of the average atomic mass is:

$Average\ atomic\ mass=(\frac {\%\ of\ the\ first\ isotope}{100}\times {Mass\ of\ the\ first\ isotope})+(\frac {\%\ of\ the\ second\ isotope}{100}\times {Mass\ of\ the\ second\ isotope})$

Given that:

Since the element has only 2 isotopes, so the let the percentage of first be x and the second is 100 -x.

For first isotope,:

% = x %

Mass = 151.0 amu

For second isotope :

% = 100 - x

Mass = 153.0 amu

Given, Average Mass = 151.96 amu

Thus,

$151.96=\frac{x}{100}\times {151.0}+\frac{100-x}{100}\times {153.0}$

Solving for x, we get that:

x = 52 %

<u>Thus percentage abundance of Eu isotopes are 52 % and 48 % .</u>

7 0

2 years ago

20. Tell one thing that is true about these balanced chemical equations. Explain your answer. A + B → CDE. H2 + O2 → H2O2.

sweet-ann [11.9K]

D because the mass evens out the objct

4 0

2 years ago

Based on the synthesis reaction, what would the product of the reaction be? NaPO3 + CuO → ? NaO + CuPO3 Na + P + Cu + O4 NaCuPO4

trapecia [35]

Answer:

Explanation:

just took test

5 0

3 years ago

Read 2 more answers

What are 6 abiotic factos from finding nemo?

julsineya [31]

Abiotic are nonliving things. So just name 6 nonliving things in finding nemo

8 0

3 years ago

Please help me! 45 points each!!

Sveta_85 [38]

Answer:

CH4+ 2Cl2→CH2Cl2+ 2HCl

Explanation:

mass is 132.8`125

as methane and dichlormethane has the same molar ration 1 to 1

mol of ch4 is 1.5625

so 1.5625 times mr of ch2cl2 is 132.8125

8 0

2 years ago