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Vladimir [108]
3 years ago
6

8. Why would it be a bad idea to make coins made of sodium metal?

Chemistry
1 answer:
Elina [12.6K]3 years ago
5 0

Answer:

Sodium reacts with the oxygen in air. It reacts vigorously with oxygen and the moisture that is already present in the air and thus catches fire.

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Modify isoleucine, below, to show its structure at pH 1 and pH 13.
NeTakaya
I have attached the answer

remember that when the solution is acidic, pH lower than 7. there are extra H+ that the amino acid can take. the basic part of the amino acid takes this extra hydrogen (the nitrogen).

when the pH is higher than 7, basic, there are not much H+ available. the amino acid loses a H+. the acid part of the amino acid loses the H (the carboxylic part). 

7 0
3 years ago
2 or 1 fun facts about preventing hazardous waste
Sedbober [7]

Answer:

Not really fun facts about hazardous waste

Explanation:

four characteristics of hazardous waste are: ignitability • corrosivity • reactivity • toxicity. These things should be thrown away a proper way to reduce pollution.

6 0
3 years ago
When 0.250 moles of LiCl are added to 200.0 g of water in a constant pressure calorimeter a temperature change of +11.08°C is ob
Nonamiya [84]

Answer:

3.91 × 10⁴ J/mol

Explanation:

We can calculate the heat of solution using the following expression.

Q = c × m × ΔT

where,

c is the specific heat capacity of the solution

m is the mass of the solution

ΔT is the change in the temperature

The mass of LiCl is:

0.250mol.\frac{42.39g}{mol} =10.6g

The mass of the solution is:

m = mLiCl + mH₂O = 10.6 g + 200.0 g = 210.6 g

Q = c × m × ΔT = (4.184 J g⁻¹ °C⁻¹) × 210.6 g × 11.08 °C = 9763 J

In a constant pressure calorimeter, the molar enthalpy of solution for LiCl is:

\Delta H_{sol}=\frac{9763J}{0.250mol} =3.91 \times 10^{4} J/mol

3 0
3 years ago
How many moles of water will be generated during the combustion of 0.38 moles of methyl alcohol (CH3OH)? 2CH3OH + 3O2 2CO2 + 4H2
ELEN [110]
You already got the balanced equation. So the ratio of mole number is the ratio of the coefficient. Then the ratio of methyl alcohol and water is 2:4=1:2. The water generated is 0.38*2=0.76 mol.
6 0
3 years ago
At 189k a sample of gas has a volume of 32.0cm. what does the gas occupy at 242k
sattari [20]
<h2>Answer:</h2>

At 189 K volume = 32.0 cm

As volume of gas is directly proportional to temperature.

As the temperature increase the volume of gas will also increase.

so

Volume at 1 K =  32/189

Volume at 242 K = 32/189 * 242 = 40.97 cm.

Gas occupy 40.97 cm volume at 242 K.



5 0
4 years ago
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