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Flauer [41]
3 years ago
8

How do we find mass number of elements in chemistry ?​

Chemistry
1 answer:
sukhopar [10]3 years ago
5 0

Answer: Atomic number, atomic mass, and relative atomic mass

Explanation:

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Which of the following is a large-scale, slow-moving natural change?
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A) glaciation because the block of ice slowly moves through the ocean and can destroy the icy habitat by its strong weight.
7 0
3 years ago
Which solution below yields the lowest final concentration of a sodium hydroxide solution prepared by diluting 50.00 mL of conce
Firdavs [7]

Answer:

The answer to your question is: letter D. 1.33 L

Explanation:

Data

V1 = 50 ml

C1 = 19.3

To solve this problem use the formula  C₁V₁ = C₂V₂

                            C2 = C1V1 / V2

C = concentration

V = volume

a) 1.15 L

                     C2 = (19.3)(50) / 1150

                      C2 = 0.84 M

b) No right answer

c) V2= 0.80 L

                     C2 = (19.3)(50) / 800

                     C2 = 1.2 M

d) V2 = 1.33 L

                        C2 = (19.3)(50) / 1330

                       C2 = 0.72 M

e) V2 = 350 ml

                         C2 = (19.3)(50) / 350

                         C2 = 2.75 M  

3 0
3 years ago
A sample of silicon rejected for use in an electronic circuit has an impurity of boron at a level of 3 parts per trillion. What
Law Incorporation [45]

Answer:

A. 3 x 10-12

Explanation:

Generally, the parts-per notation is used to represent very small concentration without any specific unit.

Parts per million is notated as 10^{-6}

Parts per billion is notated as 10^{-9}

Parts per trillion is notated as 10^{-12}

Hence, 3 parts per trillion will be written as 3 x 10^{-12}

The correct option is A.

6 0
3 years ago
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A small piece of hot metal is placed in cooler water. The metal is left in the water
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Answer: The amount of energy lost by the metal is equal to the amount of energy gained by the water

Explanation:

5 0
2 years ago
Someone please help me I will give BRAINLIST
blsea [12.9K]
  1. b
  2. d
  3. e
  4. a
  5. c
  6. f

    7.g

well there is your answers

3 0
3 years ago
Read 2 more answers
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