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3 years ago

If 18 grams of oxygen reacts completely with 4 grams of hydrogen, we would expect how many grams of water?

Chemistry

2 answers:

KIM [24]3 years ago

5 0

Answer:

C.) 22 grams because mass cannot be created or destroyed

Explanation:

seraphim [82]3 years ago

4 0

Answer: 22 grams because mass cannot be created or destroyed

Explanation: I just took the test

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Which statement describes friction?

natima [27]

Answer:

it is perpendicular to the surfaces that rub together

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4 years ago

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Indicate the mechanism that the osmium tetroxide follows to form the cyclic osmate intermediate. when drawing curved arrows show

Ivahew [28]

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3 years ago

How many grams of salt are in 5 l of a solution with a concentration of 3 g/L

inn [45]

Answer: 15 grams of salt are there in 5 L of solution.

Explanation:

Concentration of a solution is defined as the number of grams of solute dissolved per liter of the solution.

Given : Concentration of solution : 3 g/L

1 Liter of solution contains = 3 gram of salt

Thus 5 L of solution contains = $\frac{3g}{1L}\times 5L=15g$

Thus 15 grams of salt are there in 5 L of solution.

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3 years ago

Chlorine (cl) has an atomic number of 17. it often forms an ion by gaining 1 electron. what would its charge be?

Aliun [14]

Answer:

= -1

Explanation:

Chlorine belongs to the halogen group in the periodic table. It has an atomic number of 17, which indicates the number of protons and electrons in a neutral atom of chlorine is 17.
Therefore; with an atomic number of 17, its electronic configuration will be 2:8:7.
Thus; to attain a stable configuration chlorine requires to gain one electron, by so doing it becomes a negatively charged ion with a charge of -1.

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3 years ago

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Which statement explains how the bands in the crystal of a metal are like atomic orbitals?

algol [13]

Please provide the choices here.

The similarity of the bands in the crystal of a metal to the atomic orbitals can be explained by the band theory of metals. In an atom, when the electrons get excited, the electrons jumps to a higher orbital so as to reach equilibrium. This is analogous to the electrons in the metals which also jumps to another band once excited by an external energy (e.g. electrical energy).

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4 years ago

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