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GuDViN [60]
3 years ago
11

How many moles are equal to 3.5 grams of beryllium

Chemistry
1 answer:
tamaranim1 [39]3 years ago
7 0

Answer:

w

Explanation:

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HNO3 + KOH + H2O + KNO3<br><br> ACID:<br> BASE:<br> SALT:
SSSSS [86.1K]

Explanation:

acid, HNO3

base, KOH

salt ,KNO3

4 0
3 years ago
What is the value of delta Hrxn for this equation:
Ratling [72]

Answer:

The ΔHrxn for the above equation = 179 kJ/mol

Explanation:

The reaction bond enthalpies are for the reactant;

3 × N-H = 3 × 390 = 1,170 kJ/mol

2 × O=O = 2 × 502 = 1004 kJ/mol

The reaction bond enthalpies are for the product;

3 × N-O = 3 × 201 = 603 kJ/mol

3 × O-H = 3 × 464 = 1,392 kJ/mol

The ΔHrxn for the above equation is therefore;

ΔHrxn = 1,170 + 1,004 - (603 + 1,392) = 179 kJ/mol

6 0
2 years ago
How do you know if a reaction is endothermic
Karo-lina-s [1.5K]
If the temperature rises in a reaction. Exothermic is if it loses heat. 

Have a nice day, brainliest would be fantastic.
7 0
3 years ago
A qué llamamos fluido en reposo
Svetach [21]

Answer:

Lo llamas hidrostática

Explanation:

7 0
2 years ago
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What is a sentence for weathering
bija089 [108]
These rocks were either roasted or exposed to severe weathering 
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3 years ago
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