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3 years ago

Please help I'm begging you I'll give so much brainliest

Chemistry

1 answer:

slava [35]3 years ago

6 0

H2O (water) has 2 hydrogen atoms and 1 oxygen atom.

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Please can you help me from 1 to 6

jeyben [28]

Answer:

Explanation:

help you? you mean do it for you? nah man you can just use the calculator ;)

4 0

3 years ago

A hydrogen-like ion is an ion containing only one electron. The energies of the electron in a hydrogen-like ion are given by the

yan [13]

Answer:

The ionization energy (in kJ/mol) of the helium ion is 21,004.73 kJ/mol .

Explanation:

$E_n = -(2.18 10-18 J)\times \frac{Z^2}{n^2}$

Z = atomic mass

n = principal quantum number

Energy of the electron in n=1,

$E_1= -(2.18 10^{-18} J)\times \frac{4^2}{1^2}=-3.488\times 10^{-17} J$

Energy of the electron in n = ∞

$E_{\infty}= -(2.18 10^{-18} J)\times \frac{2^2}{\infty ^2}=0 J$

Ionization energy of the $He^+$ ion:

$I.E=E_{infty}-E_1=0-(-3.488\times 10^{-17} J)=3.488\times 10^{-17} J$

$I.E=3.488\times 10^{-20} kJ$

To convert in into kj/mol multiply it with $N_A=6.022\times 10^{23} mol^{-1}$

$I.E=3.488\times 10^{-20} kJ\times 6.022\times 10^{23} mol^{-1}=21,004.73kJ/mol$

3 0

3 years ago

Read 2 more answers

You measure the absorbance of your extracted curcumin solution and realize that the solution is too concentrated. What made you

zepelin [54]

If the absorbance of a solution of curcumin which is too concentrated is measured, the absorbance will be unusually high.

Spectrometry measures the interaction of light with molecules. The absorbance refers to how much light that interacts with molecules of the substance. The more the concentration of the substance the higher the absorbance of the solution.

Hence, if the absorbance of a solution of curcumin which is too concentrated is measured, the absorbance will be unusually high. An unusually high absorbance tells us that the solution is too concentrated.

Learn more: brainly.com/question/13440572

8 0

2 years ago

How many moles of He are in 16 g of the element? 1.0 mol 4.0 mol 8.0 mol 16 mol

Lady bird [3.3K]

Answer: 4 Mole

Explanation:

16/4 = 4

4 0

3 years ago

Please help:/ I can’t figure out the answer

jekas [21]

Because other people cannot see what you are sending to somebody

7 0

3 years ago

Please help I'm begging you I'll give so much brainliest​

Please help I'm begging you I'll give so much brainliest