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Vadim26 [7]
3 years ago
6

Explain why the equator has a warmer climate than the area near either the North or South pole. Be sure to thoroughly explain yo

ur answer.
Chemistry
1 answer:
KatRina [158]3 years ago
5 0

Il fait plus chaud à l'équateur et plus froid aux pôles car : 1°) les rayons du Soleil sont plus concentrés au niveau de l'équateur et plus diffus au niveau des pôles ; 2°) l'épaisseur d'air composant l'atmosphère, traversée par les rayons du Soleil est plus importante aux pôles qu'à l'équateur.

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Heavy water contains
Fed [463]

Explanation:

The difference, though, lies in the hydrogen atoms. In ordinary water, each hydrogen atom has just a single proton in its nucleus. In heavy water, each hydrogen atom is indeed heavier, with a neutron as well as a proton in its nucleus.

8 0
3 years ago
Collisions between reactant molecules lead to a reaction when the molecules have the correct orientation and
kumpel [21]
this is physical science right?
4 0
3 years ago
How do the number and kind of atoms in the reactants compare to the number and kind of atoms in the products
Korvikt [17]

the number and kind of each atom on the reactants side must be equal to number and kind of each atom on products side.

3 0
3 years ago
Which solution has the greater concentration?
WITCHER [35]

The higher concentrated solution is 0.250 mole LiCl dissolved in 250 ml of solution

( B).0.250mole of LiCl diluted in 250ml solution

<u>Explanation:</u>

<u>Procedure to find the intensity of the solution:</u>

To find the intensity of the solution, we have to use the following formula

M1V1=M2V2

250mL of a 0.500 M aqueous solution of LiCl is diluted with water

M1V1=(250) \times (0.500)=125M

250 ml of a 0.250M aqueous solution of LiCl is diluted with water

M2V2=(250) \times (0.250)=62.5M

Thus the PH level of a solution increases from ascending order, Therefore the Solution with 62.5M is a higher concentration than that of the solution with 125M.

7 0
4 years ago
Answer the following question: In a space shuttle, the CO2 that the crew exhales is removed from the air by a reaction within ca
Ulleksa [173]

Answer:

See Explanation

Explanation:

The unbalanced reaction equation is;

CO2(g) + LiOH(aq) + Li2CO3(aq) + H2O(l)

The balanced chemical reaction equation;

CO2(g) + 2LiOH(aq) + Li2CO3(aq) + H2O(l)

The molar mass of each compound is the sum of the relative atomic masses of the atoms of the elements that compose the compounds.

For CO2

12 + 16(2) = 12 + 32 = 44 g/mol

For LiOH

7 + 16 + 1 = 24 g/mol

For Li2CO3

2(7) + 12 + 3(16) = 74 g/mol

For H2O

2(1) + 16 = 18 g/mol

From the balanced chemical reaction equation, the mole ratio is 1:2:1:1. This is obtained from the stoichiometric coefficient of each reactant in the balanced chemical reaction equation.

From the question;

1 mole of CO2 occupies 22.4 L

x moles of CO2 occupies 825 L

x = 1 mole * 825 L/22.4 L

x = 36.8 moles

From the reaction equation;

1 mole of CO2 produces 1 mole of water

36.8 moles of CO2 produces 36.8 moles of water

Mass of 36.8 moles of water = 36.8 moles * 18 g/mol

= 662 g of water

The answer must have three significant figures because that is the same number of significant figures to which values were given in the question.

6 0
3 years ago
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