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3 years ago

Circle the term or phrase in parentheses that makes each statement true.

Chemistry

2 answers:

Nataly_w [17]3 years ago

4 0

A substance that produces hydrogen ions is an acid

Tpy6a [65]3 years ago

3 0

Answer:

A substance that produces hydrogen ions in solution is AN ACID.

Explanation:

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A liter of water has a mass of 1000 g. What is the density of water

Brut [27]

Density of water is 1, mass of 1000 divide by the volume of 1000 gram in a liter is 1

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3 years ago

find the mass of h2 produced Binary compounds of alkali metals and hydrogen react with water to produce H2(g). The H2H2 from the

scZoUnD [109]

Answer: Mass of hydrogen produced is 0.0376 g.

Explanation:

The reaction equation will be as follows.

$NaH(aq) + H_{2}O(l) \rightarrow H_{2}(g) + NaOH(aq)$

Now, formula for total pressure will be as follows.

$P_{total} = P_{H_{2}} + P_{H_{2}O}$

Hence, $P_{H_{2}} = P_{total} - P_{H_{2}O}$

= 755 mm Hg - 42.23 mm Hg

= 712.77 mm Hg

$P_{H_{2}} = \frac{712.77 \times 1 atm}{760 mm Hg}$

= 0.937 atm

Now, we will calculate the moles of $H_{2}$ as follows.

$P_{H_{2}}V = nRT$

$0.937 atm \times 0.505 L = n \times 0.0821 \times 308.15 K$

n = $\frac{0.473}{25.29}$ mol

= 0.0187 mol

Therefore, mass of $H_{2}$ will be calculated as follows.

$m_{H_{2}} = \frac{0.0187 mol \times 2.0158 g}{1 mol}$

= 0.0376 g

Thus, we can conclude that mass of hydrogen produced is 0.0376 g.

7 0

3 years ago

Substance/Specific heat capacity

nikdorinn [45]

I believe it is aluminum
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8 0

3 years ago

Read 2 more answers

kap26 [50]

Answer:

A they share two covalent bonds

8 0

3 years ago

Which statement best describes how an electromagnetic motor works?

inn [45]

Answer:

Electrons are moved through a magnet, creating a current. That current interacts with a circuit, moving the conductor in the orientation of the field.

Explanation:

Electro magnetic fields are used to create electric current by the movement of electrons. When a coil of wire is wrapped around a magnet it pushes electrons and they flow through a magnet to create current. This current interacts with circuit to move conductor.

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3 years ago