Two important ways that energy is transported in the world around us is through

Chemistry

1 answer:

Ann [662]3 years ago

5 0

Explanation:

The two ways that energy can be transferred are by doing work and by heat transfer.

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What is the correct name for SiCl5?

lyudmila [28]

Answer:

SbCl5

Antimony pentachloride

Antimony pentachloride is a chemical compound with the formula SbCl5.

- wikipedia

7 0

3 years ago

2H2 + O2 --> 2H2OHow many moles of hydrogen gas are needed to produce 120g of water?

wlad13 [49]

<h2>Answer:</h2>

6.67moles

<h2>Explanations:</h2>

Given the balanced chemical reaction between hydrogen and oxygen expressed as:

$2H_2+O_2\rightarrow2H_2O$

First, you need to calculate the moles of water produced.

$\begin{gathered} \text{Moles}=\frac{Mass}{\text{Molar mass}} \\ \text{Moles of water=}\frac{120}{2(1)+16} \\ \text{Moles of water}=\frac{120}{18} \\ \text{Moles of water}=6.67\text{moles} \end{gathered}$

Based on stochiometry, 2 moles of hydrogen produces 2 moles of water, hence the moles of hydrogen that will be needed to produce 120g of water is 6.67moles

6 0

1 year ago

The law of multiple proportions accounts for which of the following?

castortr0y [4]

Answer is: b) subscripts in chemical formulas.
Law of multiple proportions is also called <span>Dalton's Law.
</span>John Dalton (<span>1766 – 1844) was an English </span>chemist and <span>physicist</span><span>.
</span>Ratios of the masses of elements combine as ratios of small whole numbers. This is <span>basic for writing down </span>chemical formulas<span> for compounds.</span>

6 0

3 years ago

Write out the following statements in balanced chemical reactions. Specify states of matter for each substance. Watch out for el

jonny [76]

Answer : The balanced chemical reaction will be:

$16Na(s)+S_8(s)\rightarrow 8Na_2S(s)$

Explanation :

Balanced chemical reaction : It is defined as the reaction in which the number of atoms of individual elements present on reactant side must be equal to the product side.

As per given statement, the sodium reacts with sulfur to form sodium sulfide as a product.

The balanced chemical reaction will be:

$16Na(s)+S_8(s)\rightarrow 8Na_2S(s)$

By the stoichiometry we can say that, 16 moles of Na react with 1 mole of $S_8$ to give 8 moles of $Na_2S$ .