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sergij07 [2.7K]
2 years ago
15

Mixtures two or more substances that are mixed together but are not chemically combined the substance in a mixture each keep the

ir own properties and can be separated from the mixture.
Identify which not an example of a mixture of solids
A) Vegetable Salad
B) Fruit Salad
C) Pure Sand
D) Concrete
Chemistry
2 answers:
sergey [27]2 years ago
8 0
The answer is D, concrete
Alenkasestr [34]2 years ago
4 0

Answer:

concrete

Explanation:

because it is chemically combined

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4NH3 + 3O2 --> 2N2 + 6H2O
larisa86 [58]

The balanced reaction is:

4NH3 + 3O2 --> 2N2 + 6H2O

 <span>We are given the amount of reactants to be used for the reaction. This will be the starting point of our calculation.</span>

83.7g of O2 ( 1 mol / 32 g) = 2.62 mol O2

2.81 moles of NH3

From the balanced reaction, we have a 4:3 ratio of the reactants. The limiting reactant would be oxygen. We will use the amount for oxygen for further calculations.

<span>2.62 mol O2</span><span> (6 mol H2O  / 3 mol O2) (18.02 g H2O / 1 mol H2O) = 94.42 g H2O</span>

8 0
2 years ago
You may expect _____
TiliK225 [7]

Answer:

covalent..............

5 0
2 years ago
A sample of gas is held at constant pressure. Increasing the Kelvin temperature of this gas sample causes the average kinetic en
Maksim231197 [3]
Increase.
I don't even know the point of the first sentence. Average Kinetic Energy *is* temperature. The higher AVE the higher the temp. The higher the temp the faster the AVE. They're directly correlated.
5 0
3 years ago
How would kinetic energy of the dominoes be affected if the first domino did not hit the second one?(((20 points)))
Semenov [28]

Answer:

Not affected.

Explanation:

Kinetic energy of the dominoes not affected if the first domino did not hit the second one because no kinetic energy is lost due to no collision. If the first domino hit the second one, its kinetic energy decreases and changes in other form of energy such as heat and sound energy etc. But when there is no collision occur, then there is no change in the kinetic energy of dominoes.

5 0
2 years ago
How do we detect the change in energy?
IrinaVladis [17]
It’s properties unless we can look at the pattern in which it changes matter.
MARK ME AS BRAINLIEST
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