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tia_tia [17]
3 years ago
12

Which option correctly identifies the pure substance or substances? a. diamond b. salt

Chemistry
1 answer:
Evgesh-ka [11]3 years ago
6 0

I think the correct answers are A and B

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Why do distance v. time graphs not need a reference point?
JulijaS [17]

Answer:

When an object moves, we often refer to the amount it moves as the distance. Distance does not need a reference point and does not need a direction. If an automobile moves 50 kilometers, the distance traveled is 50 kilometers regardless of the starting point or the direction of movement.

7 0
3 years ago
PLS HELP ME ASAP!!!!!
vichka [17]

Independent variable- Sally's hair

Dependent variable- The shininess of Sally's hair

Control- The Shampoo  

7 0
3 years ago
If you start with 10.0 grams of lithium hydroxide how many grams of lithium bromide will be produced
mamaluj [8]
If you mean LiOH+HBr->LiBr+H2O
the answer is 0.4347mol LiBr and that equals (10/23)/80 gram LiBr

4 0
4 years ago
What is the atomic number (Z) of an atom containing 30 neutrons and having A= 70?
Romashka-Z-Leto [24]
A= mass number = number of protons and neutrons in the nucleus

Z= number of electrons = number of protons
Given, number of neutrons= 30

Z = A - 30 = 70 - 30 = 40

Z = 40

I hope I was helpful
7 0
4 years ago
Read 2 more answers
You measured the mass of Coke as 21.36 grams and the volume as 20.50 ml. What is the density of Coke in
ahrayia [7]

Answer:

<h3>The answer is 1.04 g/mL</h3>

Explanation:

The density of a substance can be found by using the formula

density =  \frac{mass}{volume} \\

From the question

mass of coke = 21.36 g

volume = 20.5 mL

So we have

density =  \frac{21.36}{20.50}  \\  = 1.0419512...

We have the final answer as

<h3>1.04 g/mL</h3>

Hope this helps you

4 0
3 years ago
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