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erik [133]
3 years ago
10

At what temperature does the solid start melting? -20°C 0°C 20°C 80°C

Chemistry
2 answers:
Paraphin [41]3 years ago
8 0

Answer:

0

Explanation:

Because I need please points help and thank me

Bond [772]3 years ago
3 0

Answer:

The correct answer is 0°C

Explanation:

In the case of water, the melting point occurs at 0 ° C, in which the solid becomes liquid.

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What happens to the concentration of the reactants and products during the course of a forward chemical reaction
chubhunter [2.5K]
Hello!

The concentration of the reactants decreases and the concentration of products increases during the course of a forward chemical reaction.

A chemical reaction is a thermodynamical process in which two or more substances (called reagents) undergo transformation by the breaking and rearrangement of their chemical bonds to form another substance(s), called products. In a forward chemical reaction, the reagents are being consumed, so their concentration will decrease, increasing the concentration of products as they are the result of the reaction. 

The study of how concentration changes with time in a chemical reaction is called reaction kinetics. 

Have a nice day!


3 0
3 years ago
3. If opposing forces acting on an object are equal, the net force is __________
Ad libitum [116K]

Answer: it would be 0.

Explanation: if youre pushing an object with a net force of 5 to the left, and something else is pushing it to the right with a net force of 5 it would cancel each other out.

7 0
3 years ago
If a body was lying on their back when they died, and was moved to their front after 12 hours, where would one see the skin disc
My name is Ann [436]

Answer:the parts of the body which is nearest to  the ground ie thier back will show discoloration

Explanation:

If the body remains at a position for long hours, the parts of the body which is nearest to  the ground can develop a skin discoloration as a result of pooling of blood in the tissues and this is called livor mortis, which tends to be permanent from 8Hours upwards.

8 0
3 years ago
How many grams of sodium azide are required to form 16.55g of nitrogen gas in
MrRissso [65]

Answer:

16.8128 grams of sodium azide is needed

Explanation:

2NaN3 = 2Na + 3N2

molar mass of NaN3 =

2(11 + (7  \times 3) = 64

molar mass of N2

3(7 \times 2) = 42

moles of N2 =

moles=mass/R.F.M

16.55÷42 = 0.3940

mole ratio=

2NaN3 : 3N2

3 = 0.3940

2=?

0.394. \times 2 \div 3 = 0.2627

Mass of sodium azide =64×0.2627

=16.8126

6 0
3 years ago
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Marizza181 [45]
So, as I understand it, we're talking about faulty information, one that is limiting people's access to certain services. An example of such information is the denial of an interpreter service for the Deaf. If someone is spreading the information that such a service is not available, even if is, then when someone challenges this information, they should be supported.
5 0
3 years ago
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