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rodikova [14]
3 years ago
7

By changing the number of _______ you get the same element that has a different atomic mass. An example of this would be carbon-

12 and carbon-13. This is known as a ____.
Chemistry
1 answer:
iren2701 [21]3 years ago
5 0

Answer:

neutrons, isotope

Explanation:

Isotopes are atoms of the same element with different atomic mass. The difference in atomic mass is as a result of difference in the number of neutrons in the nuclei of the atoms.

Hence, changing the number of neutrons of an atom with result in having different atomic mass but the number of protons and electrons remain the same.

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Explain why you can't just make gold out of a random yellow substance like straw or urine.
Yuri [45]

Answer:

because you cant

Explanation:

6 0
3 years ago
A 1.0 kg ball is thrown into the air and initial velocity of 30 mi./s how high into the air did the ball travel
laila [671]

Answer:

45.9m

Explanation:

Given parameters:

Mass of the ball  = 1kg

Initial velocity  = 30m/s

Unknown:

Height the ball will travel  = ?

Solution:

At the maximum height, the final velocity of the ball  will be 0;

  Using ;

   V²   = U²   - 2gh

V is the final velocity

U is the initial velocity

g is the acceleration due to gravity

h is the height

     0² = 30²   - (2 x 9.8 x h)

    0 = 900 - 19.6h

      h  = 45.9m

6 0
2 years ago
Which metallic properties are caused by atoms rolling over each other in metallic bonds?
Pani-rosa [81]

<span>The metallic properties that are caused by atoms rolling over each other in metallic bonds are malleability and ductility.the atoms that are being rolled over are delocalized electrons in the sea of electrons in the metallic bond enable them to roll over when stress is applied.</span>

4 0
2 years ago
Read 2 more answers
If you had 6H2 molecules and 4O2 molecules, how many H2O molecules could you produce?
ZanzabumX [31]

Answer:

6

Explanation:

As , 2H2 + O2 = 2H2O

with 6 H2, 4O2 is excess.

H2O molecules formed = 6

7 0
3 years ago
Write a method that could be used to produce pure crystals of copper chloride from copper oxide and hydrochloric acid.
joja [24]

- Describe how you would make the salt from the reactants.

CuO + 2 HCl → CuCl₂ + H₂O

- Describe how you would purify the salt from the reaction mixture.

Filter the solution and let the product crystallize.

Explanation:

The reaction between copper oxide (CuO) and hydrochloric acid (HCl) will produce copper chloride (CuCl₂) and water:

CuO + 2 HCl → CuCl₂ + H₂O

-Describe how you would make the salt from the reactants

In a beaker which contain cooper oxide add the hydrochloric acid. To avoid working with concentrated hydrochloric acid, the acid may be diluted with water but make sure the add the stoechiometric amount (and a little bit of excess) in respect with the copper oxide.

-Describe how you would purify the salt from the reaction mixture.

Let the reaction proceed and then filter the solution to remove the unreacted cooper oxide.

Let the filtered solution, which contain copper chloride, water and unreacted hydrochloric acid, to stand undisturbed for several days. You may see the crystals growing from the solution. To speed up the process you may reduce the temperature.

Learn more about:

purifying compounds

brainly.com/question/5586971

brainly.com/question/4757187

#learnwithBrainly

3 0
3 years ago
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