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zysi [14]
3 years ago
7

What formula do you use to calculate the heat in a endothermic reaction?

Chemistry
1 answer:
leva [86]3 years ago
4 0
Reactants + Energy → Products
I guess this is the answer
You’re welcome ;)
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When elements form bonds, it changes their ______ properties.<br>The answer is..? ​
Arturiano [62]

Answer:

chemical and physical

6 0
3 years ago
Hi! I'm hoping someone can help me with this please thank you XD
alexdok [17]

Answer:

I don't know that anwser sorry

3 0
2 years ago
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On the first day of your new job as a chemist, you are given a bottle of magnesium sulfate and asked to make 30 mL of 0.3 M MgSO
Lady bird [3.3K]

Answer:

The answer to your question is 15500 mg of MgSO₄ 7H₂O

Explanation:

Data

Volume = 30 ml

Concentration = 0.3 M

Formula MgSO4∗7H2O

Process

1.- Calculate the number of moles needed

 Molarity = moles / volume

Solve for moles

 moles = Molarity x volume

Substitution

 moles = 0.3 x 0.03 l

 moles = 0.009 moles of MgSO₄

2.- Calculate the molecular mass of MgSO4∗7H2O

molecular mass = 24 + 32 + 64 + 14 + 112

                           = 246 g

3.- Get the proportion MgSO4 :7H2O, this proportion is 1 : 7

4.- Calculate the amount of MgSO4∗7H2O

    0.009 mol of MgSO4 \frac{7 MgSO4 7H2O}{1 mol MgSO4} \frac{246 g MgSO4 7H2O}{1 mol MgSO4 7H2O}

Simplification

   15.5 g = 15500 mg

5 0
3 years ago
Calculate the molarity of the solution.
olga nikolaevna [1]

Answer:

ans. is 0.05

Explanation:

molarity=(mole of solute)/(litre of solution)

4 0
3 years ago
Read 2 more answers
Help me with both questions
Natasha2012 [34]
Sorry bro but idk maybe its :1 L=<span>103</span><span>mL</span>
3 0
3 years ago
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