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Maksim231197 [3]
3 years ago
8

Need help ASAP!!

Chemistry
1 answer:
Sholpan [36]3 years ago
6 0

Answer:A

Explanation:

Well the nervous system has to do with the nerves and if you remover what the nerves do they trigger your Brian.

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Suppose that CO2 in the atmosphere was held at a constant, natural level for a few thousand years. Then, CO2 was added to double
jasenka [17]

Answer: Temperature before the increase in CO_2 was a few degrees lower than temperature after the increase.

Explanation:

According to Charle's Law which states that The volume of gas is directly proportional to the temperature of the gas, when pressure is kept constant.

(Volume)\propto (Temperature)

\frac{volume}{temperature}=constant (At constant Pressure)

With the increase in level CO_2 in atmosphere the increase in temperature of the atmosphere will be observed.

Hence, temperature before the increase in CO_2 was a few degrees lower than temperature after the increase.

7 0
3 years ago
Geologic plates can?....
Angelina_Jolie [31]
Move and tilt<<<<<<<<<<<<<<<<
5 0
3 years ago
Read 2 more answers
What is the percent composition of CuCl2?
allochka39001 [22]
CuCl2 is Dichloride Copper, or Copper II Chloride. 
In this Molecule, there is 1 atom of Copper for every 2 atoms of Chlorine.
If you go to the periodic table, you'll see that copper has a mass of 63.5 amu, and the chlorine 35.45 amu.
Which mean that the mass of CuCl2 is 63.5 + 35.45*2 = 63.5 + 70.9 = 134.4 g/mol.
Then, you find the ration of the mass of each atom and multiply by 100.
Ratio of Copper: \frac{63.5}{134.4} * 100 and you get about 47.2% 
Ration of chlorice (Cl2): \frac{70.9}{134.4} * 100 and you get about 52.8%.

So, the percent composition of CuCl2 is 47.2% of Copper and 52.8% of chlorine.

Hope this Helps :)
4 0
4 years ago
Read 2 more answers
In an experiment, a student places a small piece of pure Mg(s) into a beaker containing 250.mL of 6.44MHCl(aq) . A reaction occu
solong [7]

Answer:

Mg(s) + 2H^+(aq) ----> Mg^2+(aq) + H2(g)

Explanation:

We must first write the molecular equation, then obtain the complete ionic equation and subsequently get the net ionic equation as shown below;

Molecular reaction equation;

Mg(s) + 2HCl(aq) ------> MgCl2(aq) + H2(g)

Complete ionic equation;

Mg(s) + 2H^+(aq) + 2Cl^-(aq) ----> Mg^2+(aq) + 2Cl^-(aq) + H2(g)

Net ionic equation;

Mg(s) + 2H^+(aq) ----> Mg^2+(aq) + H2(g)

8 0
3 years ago
3-chloropropylamine what is?
marta [7]

Answer:

a chemical compound

6 0
2 years ago
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