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3 years ago

Hydrocarbons contain only _____. carbon and hydrogen carbon, hydrogen, and oxygen carbon and nitrogen carbon and helium

Chemistry

2 answers:

Sati [7]3 years ago

5 0

Hydrocarbons contain only Carbon and hydrogen.

Hope this helps!

nika2105 [10]3 years ago

3 0

<u>Answer:</u> The correct answer is hydrogen and carbon.

<u>Explanation:</u>

Hydrocarbons are defined as the compounds in which covalent bond is present between hydrogen and carbon atom. They are also called as organic compounds.

If any other atom other than hydrogen and carbon is present, it is not considered as hydrocarbon.

For Example: $C_2H_6$ is an organic compound but $CO_2$ is not an organic compound.

Hence, the correct answer is hydrogen and carbon.

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You dissolve 14 g of Mg(NO3)2 in water and dilute to

mart [117]

Answer:

0.127M

Explanation:

Molarity of a solution = number of moles (n) ÷ volume (V)

Molar mass of Mg(NO3)2 = 24 + (14 + 16(3)}2

= 24 + {14 + 48}2

= 24 + 124

= 148g/mol

Using the formula, mole = mass/molar mass, to convert mass of Mg(NO3)2 to mole

mole = 14g ÷ 148g/mol

mole = 0.095mol

Volume = 750mL = 750/1000 = 0.75L

Molarity = 0.095mol ÷ 0.75L

Molarity = 0.127M

3 0

3 years ago

A glass flask has a volume of 500 mL at a temperature of 20° C. The flask contains 492 mL of mercury at an equilibrium temperatu

OverLord2011 [107]

Answer:

101.63° C

Explanation:

Volume expansivity γa = γr - γ g = 18 × 10⁻⁵ - 2.0 × 10⁻⁵ = 16 × 10⁻⁵ /K

v₂ - v₁ / v₁θ = 16 × 10⁻⁵ /K

(500 - 492 ) mL / (492 × 16 × 10⁻⁵) = θ

θ = 101.63° C

4 0

2 years ago

A chemical reaction produces formaldehyde, with a chemical formula of CH2O. Carbon is in group 4A, Oxygen is in group 6A, and Hy

steposvetlana [31]

Answer:

Explanation:

carbon in group 4A needs 4 more electrons to be stable

hydrogen in group 1A has one electron needs 1 more t o be stale

oxygen in group 6A has 6 and needs 2 more to be stable

They all obtain this by sharing electrons 8 around C &O, 2 around H

H : C: H

:O:

5 0

2 years ago

Which of the following correctly lists the five atoms in order of increasing size (smallest to

ICE Princess25 [194]

Answer:

F - O - S - Mg - Ba

Explanation:

as you move left to right on the periodic table the number of electrons increase.

7 0

2 years ago

During region C of the graph above the energy being absorbed is a. increasing the velocity of the water particles. b. increasing

Mkey [24]

Answer:

Your answer would be B. Increasing the distance between the water molecules and increasing their phase energy.

Explanation:

Hope this helps you answer this question!

7 0

2 years ago