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Margarita [4]
4 years ago
9

Which chemical reaction involves the production of gas?

Chemistry
1 answer:
tangare [24]4 years ago
6 0
This is process of matter changing from a liquid to a solid state. This is the sign of a chemical reaction that involves the production of gas and is usually observed when bubbles or fizzing is seen.
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A bicycle has a speed of 6.00 m/s. What is it’s speed in km/h.
aleksandrvk [35]

Answer:

21.6 km/h

Explanation:

8 0
3 years ago
What’s the scientific notation for 654,000
tigry1 [53]
6.54 x 10^5

When trying to figure out a number in a scientific notation, use this notation! 

<span>a*10^<span>b
</span></span>


P.S. If this answer helped you, please, make sure to say "Thanks" just below my answer. It will help me a lot.
8 0
3 years ago
Write your question here (Keep it simple and clear to get the best answer) calculate the atomic weight of a metal when 125ml of
lana [24]

Answer:

The answer to your question is 24.32 g

Explanation:

Data

Atomic weight = ?

HCl volume = 125 ml

Molarity = 0.2

mass of metal = 0.304 g

Balanced chemical equation

                       M + 2HCl   ⇒  MCl₂  +  H₂

Process

1.- Calculate the moles of HCl

Molarity = moles / volume (L)

- Solve for moles

  moles = Molarity  x volume

  moles = 0.2 x 0.125

             = 0.025

2.- Calculate the moles of the Metal

                1 mol of M ----------------- 2 moles of HCl

                x                ----------------- 0.025 moles of HCl

                x = (0.025 x 1) / 2

                x = 0.0125 moles of HCl

3.- Calculate the atomic weight of the metal

                atomic weight ---------------- 1 mol

               0.304 g             ---------------0.0125 moles

               Atomic weight = (1 x 0.304) / 0.0125

               Atomic weight = 24.32 g    

             

7 0
3 years ago
Read 2 more answers
Natation TT mean to genetics
neonofarm [45]
I am not sure what you are asking, but TT likely refers to the pure tall peas Mendel worked with.
4 0
3 years ago
Explain how to count the number of elements in a compound.
Anna35 [415]

Answer:

Simply identify what elements are in a compound

Explanation:

For example in NaCl we have sodium (Na) and Chlorine (Cl)

In order to do this you would need to recognise the symbols for a certain element: O for oxygen; N for nitrogen; H for hydrogen etc.

3 0
3 years ago
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