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3 years ago

What is the correct formula for calcium nitride

Chemistry

1 answer:

Artemon [7]3 years ago

8 0

Ca3N2 is your answer<span> </span>

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Explain why the several different types of microscopes are all necessary.

givi [52]

The different types of microscopes are all necessary because not all experiments require the same level of magnification. For dissections low magnification is sufficient, so a dissecting microscope works very well, while for viewing single cells the 1000 fold magnification of a compound light microscope is more accurate.

4 0

2 years ago

What is the pH of a 0.00530 M solution of HCI?

MrMuchimi

Answer:

2.28

Explanation:

HCl(l) ===> H+ + cl-

HCl is a very strong acid. Almost all of it will decompose to the right. That means the concentration of H+ is 0.00530

pH = - log [H+]

pH = - log[0.00530]

pH = - - 2.2757

pH = 2.2757

Rounded this 2.28

5 0

3 years ago

How much heat must absorbed by the reaction system to convert 100g of NaNO3 into NaHSO4(s)?

Alex787 [66]

Answer:

about 4.8kJ

Explanation:

6 0

2 years ago

PLEASE HELP!!!!!!!!!

andreev551 [17]

The average atomic mass of the imaginary element : 47.255 amu

<h3>Further explanation </h3>

The elements in nature have several types of isotopes

Isotopes are elements that have the same Atomic Number (Proton)

Atomic mass is the average atomic mass of all its isotopes

Mass atom X = mass isotope 1 . % + mass isotope 2.% ..

isotope E-47 47.011 amu, 87.34%

isotope E-48 48.008 amu, 6.895

isotope E-49 50.009 amu, 5.77%

The average atomic mass :

$\tt avg~mass=0.8734\times 47.011+0.06895\times 48.008+0.0577\times 50.009\\\\avg~mass=41.059+3.310+2.886\\\\avg~mass=47.255~amu$

5 0

2 years ago

What is the mass of one mole of H2o

puteri [66]

Answer:the answer is 18.01528

Explanation:

5 0

3 years ago