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nirvana33 [79]
3 years ago
12

Is this an alpha or beta decay?

Chemistry
1 answer:
sweet-ann [11.9K]3 years ago
7 0
It would be a alpha decay
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How many grams of HCl(aq) are required to react completely with 1.25g of Zn(s) to form ZnCl2(aq) and H2
faltersainse [42]

1.39 g HCl

Explanation:

The balanced chemical equation for this reaction is given by

Zn(<em>s</em>) + 2HCl(<em>aq</em>) ---> ZnCl2(<em>aq</em>) + H2(<em>g</em>)

Convert the # of grams of Zn to moles:

1.25 g Zn × (1 mol Zn/65.38 g Zn) = 0.0191 mol Zn

Use the molar ratio to find the # of moles of HCl needed to react completely with the given amount of Zn:

0.0191 mol Zn × (2 mol HCl/1 mol Zn) = 0.0382 mol HCl

Convert this amount to grams:

0.0382 mol HCl × (36.458 g HCl/1 mol HCl) = 1.39 g HCl

8 0
3 years ago
Which color in the rainbow has the longest wavelength? 1. orange 2. blue3. yellow4.green 5. red
rodikova [14]

In rainbow, the color that has the longest wavelength is red which means option 5 is the correct choice.

Dispersion is described to be the spreading of white mild into its complete spectrum of colors, in truth we also can say a complete spectrum of wavelengths. The white mild turns into from solar and includes seven colors. On one end of the spectrum is red with the longest wavelength. Blue or violet mild has the shortest wavelength. White mild is a aggregate of all hues withinside the color spectrum. The colors of the rainbow are: Red, orange, yellow, green, blue, indigo, violet.

Therefore, option 5 is the correct choice.

To learn more about rainbow check the link below:

brainly.com/question/12008276

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6 0
1 year ago
Analyze how elements and compounds in a balanced equation relate to the law of conservation of mass.
ICE Princess25 [194]

Answer:

Balanced equation is related to the law of conservation of mass as it states that mass can neither be created nor be destroyed in a chemical reaction so the total no. of atoms in a reaction should remain same. in a balanced chemical equation also total no. of atoms of each elements remain same.

5 0
3 years ago
Temperature change chemical reaction example
boyakko [2]

Answer:

The heating and melting of candle wax

Explanation:

It heats up, but when cooled it hardens and cannot be put back into its original form.

Hope this helps

Please mark me as Brainliest

3 0
3 years ago
2. Just like the N and S poles on bar
maksim [4K]

Answer:

A) attract

Explanation:

hope it helps you

3 0
3 years ago
Read 2 more answers
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