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n200080 [17]
3 years ago
13

Select all of the compounds.

Chemistry
2 answers:
ohaa [14]3 years ago
7 0
H20-h&o
Gold-au
Nitric acid-h,n,o
Cobalt-co
Oxygen-o
MAKE SURE THEY ARE CAPITALIZED
Tcecarenko [31]3 years ago
4 0
Compounds have more than one element

H2O
HNO3
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Calculate the volume of hydrogen that combines with 12 cm³ of chlorine gas to form hydrogen chloride.The games react at the same
telo118 [61]

Answer:12 cm^3 becoz as per Gay-Lussac law

H2+Cl2---. 2HCl thus ratio is 1:1:2

Explanation:

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2 years ago
How does thermal energy transfer when a room is heated by a furnace?
Anna007 [38]
The answer is B,This is an example of convection, where fluid will circulate.This is because when part of air is warmed up, they expand and become less dense then rise,Therefore, the colder air contracts and become denser and sinks, in order to take in the place of the warm air. This phrase circulates and therefore the it can transfer heat a lot more faster.
 
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3 years ago
Which chemical equation is a model of a decomposition reaction?
blagie [28]
A is a model of a decomposition reaction
3 0
3 years ago
A 76.0-gram piece of metal at 96.0 °C is placed in 120.0 g of water in a calorimeter at 24.5 °C. The final temperature in the ca
anygoal [31]

Answer:

S(metal) = 0.66J/g°C

Explanation:

We can find specific heat of a material, S, using the equation:

q = m*S*ΔT

<em>Where q is change in heat, m is the mass of the substance, S specific heat and ΔT change in temperature.</em>

The heat given by the metal is equal to the heat that water absorbs, that is:

m(Metal)*S(metal)*ΔT(Metal) = m(Water)*S(water)*ΔT(water)

<em>Where:</em>

m(Metal) = 76.0g

S(metal) = ?

ΔT(Metal) = 96.0°C-31.0°C = 65.0°C

m(Water) = 120.0g

S(water) = 4.184J/g°C

ΔT(water) = 31.0°C-24.5°C = 6.5°C

Replacing:

76.0g*S(metal)*65.0°C = 120.0g*4.184J/g°C*6.5°C

S(metal) = 0.66J/g°C

<em />

The law of conservation applies because the energy is not been created or destroyed. The energy that the metal gives is absorbed by the water.

3 0
3 years ago
Which of the following indicates that a chemical reaction system has reached equilibrium?
navik [9.2K]
D) if stuff is changing then the reaction is hardly in equilibrium is it? Everything is just chilling at equilibrium so there would be constant concentration
4 0
3 years ago
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