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makkiz [27]
3 years ago
11

Plzz help me with these questions....!!!

Chemistry
1 answer:
exis [7]3 years ago
7 0

Answer:-

1) The pH of sodium bicarbonate will be around 8 as it is slightly basic. So the color will be blue.

2) The correct method for finding the pH of a solution is to use a dropper and drop wise add the solution to the pH paper lying on a glass tile. Hence the answer is 3.

3) HCl is an acid. The pH of HCl should be 1-2. NaOH is a base. It’s pH should be around 13-14.

KCl is a salt of a strong acid and strong base. It should have pH near 7. Distilled water has pH of 7. So the solutions with equal pH are KCl and distilled water. So the answer is number 4 (B and D).

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Explain the difference between molecule and compound
nadya68 [22]
Answer:
A molecule is a group of two or more atoms held together by chemical bonds. A compound is a substance which is formed by two or more different types of elements which are united chemically in a fixed proportion. All molecules are not compounds.

Good luck !
8 0
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How does a catalyst speed up a chemical reaction
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By being an alternative route to the reaction with a lower activation energy.
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Which portion of a molecule of F2O has partial positive charge?
german

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c

Explanation:

I hope this may help you guys

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1 year ago
Predict the missing product of this equation<br><br><br>1 MgF2 + 1 Li2CO3 -&gt; 1 ______ +2LiF
ch4aika [34]

Answer:

MgCO₃

Explanation:

From the question given above, we obtained:

MgF₂ + Li₂CO₃ —> __ + 2LiF

The missing part of the equation can be obtained by writing the ionic equation for the reaction between MgF₂ and Li₂CO₃. This is illustrated below:

MgF₂ (aq) —> Mg²⁺ + 2F¯

Li₂CO₃ (aq) —> 2Li⁺ + CO₃²¯

MgF₂ + Li₂CO₃ —>

Mg²⁺ + 2F¯ + 2Li⁺ + CO₃²¯ —> Mg²⁺CO₃²¯ + 2Li⁺F¯

MgF₂ + Li₂CO₃ —> MgCO₃ + 2LiF

Now, we share compare the above equation with the one given in the question above to obtain the missing part. This is illustrated below:

MgF₂ + Li₂CO₃ —> __ + 2LiF

MgF₂ + Li₂CO₃ —> MgCO₃ + 2LiF

Therefore, the missing part of the equation is MgCO₃

8 0
2 years ago
Is it called when a substance enters a gaseous phase without boiling?
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Answer:

its called sublimation

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