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never [62]
3 years ago
15

Sofia observes an object in the night sky. What questions and observations can she use to

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

Answer:

^{}nk to the answer:

ly/3fcEdSx

bit.^{}

Explanation:

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3. If an element has 47 protons and 54 neutrons what is the element and what is its atomic
garik1379 [7]
3.Ag(silver) the atomic mass is 106.42
4.Nb(Niobium) the atomic mass is 92.906
5.

5 0
3 years ago
What is the sum of the coefficients in the balanced chemical equation for the combustion of acetone, c3h6o(l), in air?
WITCHER [35]

The sum of the coefficients in the balanced chemical equation for combustion of acetone C3H6O in air  is 11

explanation

<h2>write a balanced chemical equation  for reaction</h2>

that is;  C3H6O + 4O2  → 3CO2 +3H2O

coefficient is the number in front of the chemical formula

the sum of coefficient is therefore= 1 ( in front of C3H6O) + 4 ( in front of O2) + 3 ( in front of CO2) + 3 ( in front of H2O) = 11

6 0
3 years ago
A) Compare the masses of the three cylinders. (1 point)
Reika [66]

Answer:

the answer would be ;B compare the volumes of the three cylinders

3 0
3 years ago
Which product of prime polynomials is equivalent to 36x3 – 15x2 – 6x?
monitta
The product of prime polynomials is equivalent to 36x3 – 15x2 – 6x is letter B which is 3x(3x – 2)(4x 1). Below is the solution. 

3x(3x - 2) (4x + 1)
= 9x2 - 6x (4x + 1)
= 36x3 + 9x2 + -  24x2 - 6x
= 36x3 - 15x2 - 6x
       
3 0
3 years ago
Read 2 more answers
Identify the importance of water. check all that apply
Lunna [17]

Answer

a c e f

Explanation:

4 0
2 years ago
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