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rjkz [21]
4 years ago
14

a mixture of sand and table salt can be separated by filtration because the substance in the mixture differ in

Chemistry
1 answer:
maks197457 [2]4 years ago
6 0
Density , I'm not sure which one is denser but that's the answer lol
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The reaction where heat is added is called? removed?
Harrizon [31]
Endothermic<span> Reaction??? </span>
4 0
4 years ago
Which two elements have the same number of energy levels with electrons in them?(1 point)
Vladimir79 [104]

Its B) Boron and Oxygen

5 0
3 years ago
Identify which sets of quantum numbers are valid for an electron. Note that each set is ordered (n,l,ml,ms).
Fynjy0 [20]

Answer:

The answer to your question is:

Explanation:

Quantum numbers have the numbers

n = from 1 to 7

l = s = 0 p = 1 d = 2  f= 3

m = ± l

s = ±1/2

Group of answer choice.

A) 2, -1. 1, -1/2     The option is incorrect "l" could not be negative

B) 2, 1, 0 , 1/2       The option is posible

C) 3, 2, 1, -1          This option is incorrect "s" can not value -1

D) 4, 3, 2, 1/2       This option is correct

E) 4, 3, -4, 1/2      This option is incorrect "m2 can not value -4

F) 1, 1, 0, 1/2         This option is incorrect, the second number is not posible

G) 1, 1, 0, -1/2        This option is incorrect the second number could not be 1.

H) 3, 0, 0, 1/2       This option is incorrect "l" can not value 0

I) 0, 2, 0, 1/2         This option is incorrect, n can not value 0

J) 3, 2, 2, 1/2        This option is correct

K) 1, 2, 0, -1/2       This option is incorrect "l" can not value 2.

3 0
4 years ago
In an endothermic reaction what is true of the enthalpy
charle [14.2K]

Answer is: a) is has increased.

There are two types of reaction:  

1) endothermic reaction (chemical reaction that absorbs more energy than it releases).

For example, the breakdown of ozone is an endothermic process. Ozone has lower energy than molecular oxygen (O₂) and oxygen atom, so ozone need energy to break bond between oxygen atoms.

2) exothermic reaction (chemical reaction that releases more energy than it absorbs).  

For example, ΔH(reaction) = -225 kJ/mol; this is exothermic reaction.

4 0
4 years ago
Charlie is doing a scientific investigation about the properties of light energy. For his experiment, he points a flashlight at
matrenka [14]

Answer:

it would be A.

Explanation:

7 0
4 years ago
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