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umka2103 [35]
3 years ago
6

Which of the following questions can be answered by science? (2 points) What makes a song sound beautiful? What is the meaning o

f life? What makes a painting beautiful? What are the effects of low pH in soil?
Chemistry
1 answer:
34kurt3 years ago
5 0

Answer:

D

Explanation:

Its the only answer that actually makes sense and i got it right on the quiz.

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Ca(ClO4)2<br> Ionic compound name
qwelly [4]

Answer:

I thing Calcium Perchlorate

7 0
3 years ago
Calculate and explain (in words) how you would make 90.0 mL of 2.0 M MgSO4 solution from a solid solute MgSO4.
lozanna [386]

Answer:

See Below.

Explanation:

Recall that molarity is defined by moles of solute over liters of solution (mol/L).

Therefore, to make 90.0 mL of 2.0 M MgSO₄, we will need:

\displaystyle 90.0\text{ mL} \cdot \frac{2.0\text{ mol MgSO$_4$}}{1\text{ L}} \cdot \frac{1\text{ L}}{1000\text{ mL}} = 0.18\text{ mol MgSO$_4$}

Convert this amount to grams. The molecular weight of MgSO₄ is 120.38 g/mol:

\displaystyle 0.18\text{ mol MgSO$_4$} \cdot \frac{120.38\text{ g MgSO$_4$}}{1\text{ mol MgSO$_4$}} = 22\text{ g MgSO$_4$}

Therefore, to make the solution, we can add 22 grams of MgSO₄ into a graduated cylinder, then mix and dilute the solution with distilled water until we reach 90.0 mL.

5 0
2 years ago
Read 2 more answers
What will happen to the chemical equilibrium if MgCl2 is added?
Verizon [17]
The chemical equilibrium will be unaffected 
6 0
3 years ago
Name the method that is used to separate cream and skim milk from each other
dimaraw [331]

Answer:

the separator is a centrifugal device that separates milk into cream and skimmed

I hope it helps you

6 0
2 years ago
Your mother picks you up at school. It takes 10 minutes for the 5-km drive home. Which of the following can you calculate a valu
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The answer is the second one
3 0
3 years ago
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