2 years ago

Order how the energy is transferred in this scenario:

Chemistry

1 answer:

elena55 [62]2 years ago

6 0

A. ) Chemical

B.) Mechanical

C.) Thermal

D.) Potential

Hope this helps!

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What is the molar mass of Mg(NO2)2?

qwelly [4]

Answer:

116g/mol

Explanation:

Mg=24

NO2=46

multiple 46 by 2and then add 24

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2 years ago

Which do you think will warm up the plate more quickly?

neonofarm [45]

Answer: B

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2 years ago

How many significant figures are needed in the answer when 1.31m is multiplied by 6.5 m

dmitriy555 [2]

Answer:

two

Explanation:

The number of significant figures needed in the answer is 2.

This is because when finding the products of two numbers, the result is as accurate as the least number of significant figures of the numbers being multiplied.

Here the numbers being multiplied are;

1.31m

6.5m

1.31m has 3 significant figures

6.5m has 2 significant figures.

So, the product will have 2 significant figures

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2 years ago

2. _____ is the distance and direction of an object’s change in position from the starting a. Speed b. Displacement c. Ve

Llana [10]

Displacement is the distance and direction of an object's change in position from the starting.
Hence option B is correct.

Hope this helps!

3 0

2 years ago

P4O10(s) = -3110 kJ/mol H2O(l) = -286 kJ/mol H3PO4(s) = -1279 kJ/mol Calculate the change in enthalpy for the following process:

mash [69]

Answer:

-290KJ/mol

Explanation:

ΔHrxn = ΔHproduct - ΔHreactant

ΔHrxn= 4ΔHH3PO4 - {6ΔHH2O + ΔHP4O10}

ΔHrxn = 4(-1279) - [6(-286) - 3110]

= -5116 -(-1716-3110)

= -5116-(-4826)

= -5116 + 4826 = -290KJ/mol

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2 years ago