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GenaCL600 [577]
3 years ago
13

10. When a piece of steel wool is burned it gains mass. Which explanation is consistent with the law of conservation of mass?

Chemistry
1 answer:
frez [133]3 years ago
4 0

Answer:

Oh come on. Look at all - then look at A.

Explanation:

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Identify the half reaction as oxidation or reduction.
topjm [15]
OILRIG:
Oxidation is loss (of electrons)
Reduction is gain (of electrons)
so...
The first one is an oxidation half-equation as the Sn loses electrons;
The second one is a reduction half-equation as the Cl₂ gains electrons
8 0
3 years ago
A 1.00 g sample of n-hexane (C6H14) undergoes complete combustion with excess O2 in a bomb calorimeter. The temperature of the 1
Nadya [2.5K]

Answer:

-5,921x10⁶J/mol

Explanation:

Internal energy change (ΔU) for the reaction of combustion in the bomb calorimeter is:

ΔU = q calorimeter + q solution

Where:

q calorimeter is Ccal×ΔT (Ccal=4042J/°C) and (ΔT is 29,30°C-22,64°C=<em>6,66°C</em>)

q solution is c×m×ΔT (c= 4.184 J/g°C), (m=1502g H₂O), (ΔT is 29,30°C-22,64°C=<em>6,66°C</em>)

Replacing:

ΔU = 26920J + 41854J = <em>68774 J</em>

This energy is per g of n-hexane, now, per mole of n-hexane:

\frac{68774J}{1gHexane} *\frac{86,1g}{1mol}= -<em>5,921x10⁶J/mol</em>

<em>-negative because the energy is produced-</em>

I hope it helps!

5 0
3 years ago
Read 2 more answers
Someone help w one of these questions. Or if you know all of them surely help.
fenix001 [56]

Answer:

1 A true

B False

C not sure about it False

D False

5 0
2 years ago
Mutations that neither benefit nor harm the organism have effect on the organism's survival.
nalin [4]

No mutations that neither benefit nor harm the organism has no effect on the organism's survival.

Explanation:

The neutral mutations do not cause any effect on the organism they occur. They are called silent point mutations because they do not code for the amino acid change in the proteins.

They have no effect on the organism's survival neither beneficial nor harmful effect.

The neutral mutations do not affect the process of Natural selection.

7 0
3 years ago
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4. Diane and Ben are at the market picking up some groceries. They are both pushing the shopping cart in the same direction. Dia
oksian1 [2.3K]

Answer:

75 N

Explanation:

i just know bc i did this question like 10 minitues ago im postive im right

3 0
3 years ago
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