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oksano4ka [1.4K]
3 years ago
14

Can someone who expert in chemistry be my personal tutor? I'm so desperate​

Chemistry
1 answer:
lions [1.4K]3 years ago
5 0
Yes..? I don’t understand what you’re trying to ask mate.
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How do you find the volume of a liquid
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7 0
3 years ago
Please show work:<br> Question below
ozzi

Answer:

b) 2.0 mol

Explanation:

Given data:

Number of moles of Ca needed = ?

Number of moles of water present = 4.0 mol

Solution:

Chemical equation:

Ca + 2H₂O     →      Ca(OH)₂ + H₂

now we will compare the moles of Ca and H₂O .

                          H₂O        :        Ca                

                             2           :        1

                             4.0           :       1/2×4.0 = 2.0 mol

Thus, 2 moles of Ca are needed.      

         

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2 years ago
Convert 512 kilograms to milligrams.<br><br> 0.000512<br> 0.512<br> 512,000<br> 512,000,000
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The answer is D! 512000000
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A scientist uses an accelerator and high energy electrons to study the particles inside the protons of a helium atom. What parti
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