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s344n2d4d5 [400]
3 years ago
5

Only an unbalanced force will change an objects

Chemistry
1 answer:
ella [17]3 years ago
7 0
Direction of motion. If the object exists in a plane with no outside forces acting upon it, or equal forces acting upon it, it will just sit there; however, an imbalance of force, such as an increase or decrease of force in an applied vector, will cause the object to change direction.
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Which of the following is the balanced equation for P + O2 → P2O5? Question 3 options: A) 4P + O2 → 2P2O B) P + 5O2 → 2P2O5 C) 4
Luden [163]

Given equation:

P + O2 → P2O5

In order for the equation to be balanced, the stoichiometry of the atoms of one kind on the reactant side must be equal to that on the product

Reactants                                            Products

P = 1                                                       P = 2

O = 2                                                     O = 5

The balanced equation would be:

4P + 5O2 → 2P2O5

Reactants                                            Products

P = 4                                                      P = 4

O = 10                                                    O = 10

Ans: D)


4 0
4 years ago
Read 2 more answers
This is a quiz and it’s due today
Romashka [77]
The answer is the el second one since it is a physical change
7 0
3 years ago
CAN SOMEONE HELP ME ON THIS PLEASE
lord [1]

<em>option C gas.............................. ᕕ( ᐛ )ᕗ</em>

6 0
3 years ago
12.5 g of copper are reacted with an excess of chlorine gas, and 25.4 g of copper(II) chloride are
Alika [10]

Answer:

Percent yield = 94.5%

Theoretical yield =  26.89 g

Explanation:

Given data:

Mass of copper = 12.5 g

Mass of copper chloride produced = 25.4 g

Theoretical yield = ?

Percent yield = ?

Solution:

Cu + Cl₂  →  CuCl₂

Number of moles of Copper:

Number of moles = mass/ molar mass

Number of moles = 12.5 g/ 63.55 g/mol

Number of moles = 0.2 mol

Now we will compare the moles of copper with copper chloride.

          Cu          :           CuCl₂

           1             :              1

          0.2          :            0.2

Theoretical yield:

Mass of copper chloride:

Mass = Number of moles × molar mass

Mass = 0.2 mol × 134.45 g/mol

Mass = 26.89 g

Percent yield:

Percent yield = Actual yield / theoretical yield  × 100

Percent yield = 25.4 g/26.89 g × 100

Percent yield = 94.5%

8 0
4 years ago
Though energy can change forms, the total amount of energy in the universe remains constant.
Tom [10]
True, Energy cannot be created or destroyed therefore it remains constant
5 0
4 years ago
Read 2 more answers
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