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Musya8 [376]
3 years ago
8

The medulla _____.

Chemistry
2 answers:
I am Lyosha [343]3 years ago
8 0
Controls heartbeat and breathing
lutik1710 [3]3 years ago
4 0
“Coordinates muscle movement”
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What happens to the size of a population if the birth rate decreases while the death rate remains the same?
Sever21 [200]

Answer: It will decrease.

Explanation:

If you had an equal birth and death rate, the population would theoretically stay the same, but since you have more deaths and less births, the population will decrease.

3 0
3 years ago
One mole of ar initially at 305 k undergoes an adiabatic expansion against a pressure pexternal = 0 from a volume of 8.5 l to a
PilotLPTM [1.2K]
An adiabatic process is when the system is insulated that no heat is released to the surroundings. For this type of process, we have a derived formula written below:

(T₂/T₁)^C = (V₁/V₂)
where C = Cv/nR

From the complete problem shown in the attached picture, Cv = (3/2)R. Thus,
C= (3/2)/1 mol = 3/2

(T₂/305 K)^(3/2) = (8.5 L/82 L)
Solving for T₂,
<em>T₂ = 67.3 K</em>

3 0
3 years ago
If a mixture of gases contained 78% nitrogen at a pressure of 984 torr and 22% carbon dioxide at 345 torr, what is the total pre
AysviL [449]

Answer:

P(total) = 1329 torr

Explanation:

Given data:

Pressure of nitrogen = 984 torr

Pressure of carbon dioxide = 345 torr

Total pressure of system = ?

Solution:

The given problem will be solve through the Dalton law of partial pressure of gases.

According to the this law,

The total pressure exerted by the mixture of gases is equal to the sum of partial pressure of individual gas.

Mathematical expression,

P(total) = P₁ + P₂ +.......+ Pₙ

Here we will put the values in formula,

P₁ = partial pressure of nitrogen

P₂ = partial pressure of carbon dioxide

P(total) = 984 torr + 345 torr

P(total) = 1329 torr

8 0
3 years ago
Mg + H2O → Mg(OH)2 + H2
Ilya [14]
Mg + 2️⃣H20 ➡️ Mg(OH)2 + H2
3 0
3 years ago
Copper metal reacts with nitric acid according the equation below 3 Cu (s) +8 HNO 3(aq) -...m+3 Cu^ 2+ (aq)+2NO (g) +6 NO 3 (aq)
Maksim231197 [3]

Answer:

i think it is NO2 and +6 NO 6 that's all I have

5 0
3 years ago
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