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Agata [3.3K]
2 years ago
10

State two differences between physical change and chemical change

Chemistry
2 answers:
Lubov Fominskaja [6]2 years ago
6 0

Answer:

See explanation

Explanation:

1) Physical change is usually reversible, while chemical change isn't

2) Chemical change involves the change of chemical composition of matter while physical change doesn't

katovenus [111]2 years ago
6 0

Answer:

1. Physical changes only change the physical attributes of a substance, such as color or state, while chemical changes affect chemical composition.

2. In physical changes, no new energy or substances are produced.

Explanation:

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Igneous intrusion D is younger than layers B, C, and E according to
Maurinko [17]

Answer:

Law of cross-cutting relationships

Explanation:

This interpretation is based on the law of cross - cutting relationships.

This law states that "faults and fractures that cuts through a rock are younger than the rocks they cut through".

  • In a sequence of strata, the strata that are not cut through by these features are younger than the cross -cutting features.
  • The igneous intrusion is younger since it cuts through the rock layers.
6 0
3 years ago
Calculate the mass percent composition for Al(HCO3)3
ZanzabumX [31]

Answer:

salamat sapoints po lods thaks

7 0
2 years ago
What is the volume of 1.4 mol of nitrogen gas at STP?
zaharov [31]

Answer:

31.36 Liters

Explanation:

1 mole is equal to 22.4 liters at STP so you can use the equation

1.4 moles * 22.4 liters

to find the volume.

6 0
3 years ago
Ammonia and oxygen react to form nitrogen monoxide and water. Construct your own balanced equation to determine the amount of NO
stiv31 [10]

Answer:

NO would form 65.7 g.

H₂O would form 59.13 g.

Explanation:

Given data:

Moles of NH₃ = 2.19

Moles of O₂ = 4.93

Mass of NO produced = ?

Mass of  produced H₂O = ?

Solution:

First of all we will write the balance chemical equation,

4NH₃ + 5O₂   →   4NO + 6H₂O

Now we will compare the moles of NO and H₂O with ammonia from balanced chemical equation:

NH₃  :   NO                                   NH₃  :   H₂O

4     :    4                                          4    :      6

2.19   :    2.19                                 2.19  : 6/4 × 2.19 = 3.285 mol

Now we will compare the moles of NO and H₂O with oxygen from balanced chemical equation:

O₂  :   NO                                               O₂ :   H₂O

5     :    4                                                  5     :    6

4.93   :   4/5×4.93 = 3.944 mol               4.93  : 6/5 × 4.93 = 5.916 mol

we can see that moles of water and nitrogen monoxide produced from the ammonia are less, so ammonia will be limiting reactant and will limit the product yield.

Mass of water = number of  moles × molar mass

Mass of water = 3.285 mol × 18 g/mol

Mass of water = 59.13 g

Mass of nitrogen monoxide  = number of  moles × molar mass

Mass of nitrogen monoxide = 2.19 mol × 30 g/mol

Mass of nitrogen monoxide = 65.7 g

4 0
3 years ago
..can someone answer these questions ive already posted this question 16 times and I dont have much points left so please anyone
noname [10]

Answer

  1. A
  2. D
  3. D
  4. A
  5. B
  6. A

This is what I got, but i'm mot sure if I'm right

7 0
3 years ago
Read 2 more answers
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