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makkiz [27]
4 years ago
8

Why is there day and night

Chemistry
1 answer:
Burka [1]4 years ago
6 0
Because the moon orbits the earth and when the moon gets in front of the sun it blocks the sunlight and then it becomes night
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How does percent composition by mass contribute to writing a balanced equation?
Mariulka [41]

Answer:

mass composition is very essential in obtaining a balanced equation

Explanation:

to have a completely balanced equation that means the right hand side being your reactants must be equal to the right hand side being your product. both sides need to have equal mass composition, when calculating the mass composition make sure both sides are equal if not consider revisiting the number of moles on both sides to ensure they all balance

5 0
3 years ago
The disturbance of a supersaturated solution will cause
Flura [38]
The disturbance of a supersaturated solution will cause precipitation. A supersaturated solution is a solution that contains more solute than the solvent can dissolve. When this type of solution is disturbed like when it is moved, the formation of a solid is observed immediately.
3 0
4 years ago
A box contains 104 gas molecules, 2500 of nitrogen and 7500 of argon in thermal equilibrium. The molecular weight of N2 is 28g/m
LekaFEV [45]

Answer : The temperature of this gas will be, 206.9 K

Explanation :

The expression for the kinetic energy per molecule of monoatomic gas (argon) is:

K.E_{argon}=n_{argon}\times \frac{3}{2}\times K_BT      ...........(1)

The expression for the kinetic energy per molecule of diatomic gas (nitrogen gas) is:

K.E_{nitrogen}=n_{nitrogen}\times \frac{5}{2}\times K_BT      .............(2)

The total kinetic energy of the molecule will be,

K.E_{Total}=K.E_{argon}+K.E_{nitrogen}

Now put all the expression in this, we get:

K.E_{Total}=(7500)\times \frac{3}{2}\times K_BT+(2500)\times \frac{5}{2}\times K_BT

T=\frac{K.E}{17500\times K_B}

Now put all the given values in this expression, we get:

T=\frac{5\times 10^{-17}J}{17500\times (1.381\times 10^{-23}J/K)}

T=206.9K

Therefore, the temperature of this gas will be, 206.9 K

8 0
4 years ago
How do I determine the value for the smallest increment on each cylinder
Inessa05 [86]
You can tell by how many of the smallest increments there are and the first big number. in this case for number 1 each increment would be worth 1, because it reaches ten and has ten increments. While the one next to it would be worth 2.5, because 10 divided by four equals 2.5. Hope this helps!
6 0
3 years ago
If the quantity of reactants used in a chemical reaction increase, then the quantity of the products produced will also be incre
oksian1 [2.3K]

Answer:

the amount of reactants is always directly proportional to the product

Explanation:

4 0
4 years ago
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