2 years ago

PLEASE HELP!!!!!!!! giving brainlist

Chemistry

2 answers:

elena55 [62]2 years ago

7 0

Hot to cold thermal radiation

Bas_tet [7]2 years ago

4 0

Answer:

I can only give the answer for the first page.

Explanation:

1. Thermal energy always moves from hot objects to cold objects.

2. When two states of matter reach the same temperature, it is called thermal equilibrium.

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Explanation:

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Molecular compounds are formed by two or more nonmetals.

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3 years ago

It takes 38.5mL of 0.753M NaOH solution to completely neutralize 155mL of a sulfuric acid. What is the concentration of the sulf

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Answer:

The correct solution is "93.48 M".

Explanation:

According to the question,

The number of moles of NaOH will be:

= $0.753\times 38.5$

= $28.99 \ mol$

The number of moles of needed $H_2SO_4$ will be:

= $\frac{1}{2}\times 28.99$

= $14.49 \ mol$

hence,

The concentration of $H_2SO_4$ solution will be:

= $\frac{Number \ of \ moles}{Volume \ of \ solution}$

= $\frac{14.49}{0.155}$

= $93.48 \ M$

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3 years ago