4 years ago

HELPPP

Chemistry

1 answer:

kolbaska11 [484]4 years ago

6 0

B is the answer I think hope this helps

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kirill [66]

Answer:

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3 years ago

Nebulae are enormous clouds in outer space.they are made mostly of hydrogen gas ,helium gas and dust , some nubelae glow brightl

adell [148]

They’re different in regards to the fact that nebulae are not actively burning while stars are

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3 years ago

Name the relationship between 3 and 5

Andrej [43]

The numbers are both prime numbers.They both have 2 factors.
1x3=3. 1x5=5
3x1=3. 5x1=5

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3 years ago

Combustion of hydrocarbons such as butane (C4H10) produces carbon dioxide, a "greenhouse gas." Greenhouse gases in the Earth's a

sweet-ann [11.9K]

Answer: $2C_4H_{10}(g)+13O_2(g)\rightarrow 8CO_2(g)+10H_2O(g)$

Explanation

Combustion is a chemical reaction in which hydrocarbons are burnt in the presence of oxygen to give carbon dioxide and water.

According to the law of conservation of mass, mass can neither be created nor be destroyed. Thus the mass of products has to be equal to the mass of reactants. The number of atoms of each element has to be same on reactant and product side. Thus chemical equations are balanced.

The balanced combustion reaction for butane is,:

$2C_4H_{10}(g)+13O_2(g)\rightarrow 8CO_2(g)+10H_2O(g)$

7 0

3 years ago

Periodic table the first row of elements fits in the period blank after the element blank the second row of elements fits in per

Bezzdna [24]

Answer:

The first row fits in period 2

The second row fits in period 3

Explanation:

Elements arranged vertically in the periodic table in groups that share similar chemical properties.

Elements are also organized horizontally in rows or periods

The length of each period is determined by the number of electrons that can occupy the sublevels being filled in that period.

7 0

3 years ago