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alukav5142 [94]
3 years ago
12

Solve the following: Which one is more metallic

Chemistry
1 answer:
Degger [83]3 years ago
7 0

Answer:

aluminum

Explanation:

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How do I do a balancing equation. I understand. Can you show me a step by step on how to do one of the equations that aren't don
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To balance a chemical equation, you first must count the number of each of the atoms on both the left hand side - reactant side and the right hand side - product side of the chemical reaction.

After counting the atoms, make a tally of the atoms on both sides, for instance if it is hydrogen - h, record the number of hydrogen atoms on the reactant and product side. Then, place coefficients at appropriate places for the elements and or compounds, to basically have all of the different kinds of atoms from their respective elements equal the same on both the left and right side of the reaction.

SnO2 + H2 > Sn + H2O
1st count the metals - Sn atoms on both sides -
Sn left side - 1
Sn right side - 1

2nd count the oxygen atoms on both sides
O atom left side - 2
O atom right side - 1.

Here, the atoms are not the same, so place a coefficient on the side with the least number of oxygen atoms, right side, put 2 to balance.

Now O atoms are same on both sides, 2 atoms but, there are 4 hydrogen atoms now,

Since 2H2O = 2H2 + 2O = H = 4 and O = 2.

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So balanced equation:
SnO2 + 2H2 > Sn + 2H2O.
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3 years ago
HELP ME!!!! What is the gravitational potential energy stored in a church bell with a mass of 60 Kg hanging in a church steeple
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Explanation:

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2 years ago
A cube of steel with a mass of 150 grams is heated from 60°C to 150°C.
yan [13]

Answer:

1.

The energy lost by the water is given by:

where

m = 3.0 kg = 3000 g is the mass of water

Cs = 4.179 J/g•°C is the specific heat

is the change in temperature

Substituting,

2.

The energy added to the aluminium is given by:

where

m = 0.30 kg = 300 g is the mass of aluminium

Cs = 0.900 J/g•°C is the specific heat

is the change in temperature

Substituting,

4. 42.9 g

The mass of the water sample is given by

where

is the heat added

is the temperature change

Cs = 4.179 J/g•°C is the specific heat

5. 115.5 J

The heat used to heat the copper is given by:

where

m = 5.0 g is the mass of copper

Cs = 0.385 J/g•°C is the specific heat

is the change in temperature

6. 0.185 J/g•°C

The specific heat of iron is given by:

where

Q = -47 J is the heat released by the iron

m = 10.0 g is the mass of iron

is the change in temperature

Substituting,

Substituting,

Substituting,

Explanation:

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