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diamong [38]
2 years ago
7

Please help me vote you brainiest or whatever it’s called but please help me

Chemistry
1 answer:
Marrrta [24]2 years ago
6 0

Answer:

the penny would move in the direction opposite to the direction of the arrow .

The third law states that every action requires an equal and opposite reaction

So just like we move back when a car suddenly moves forward while we are in a car , the same happens with the penny and card

2) As stated above, Newtons 3rd law is being represented

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What kind of chemical bonds are represented by the product in the following diagram?
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Calculate the molarity of a solution that contains 0.175 mol of zncl2 n exactly 150 ml of solution.
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How many grams of water are made from the reaction of 16.0 grams of o2? given the reaction: 2h2 o2 --> 2h2o
Jlenok [28]

Answer:

18.0 g H₂O

Explanation:

To find the mass of water (H₂O), you need to (1) convert grams O₂ to moles O₂ (via the molar mass), then (2) convert moles O₂ to moles H₂O (via mole-to-mole ratio from equation coefficients), and then (3) convert moles H₂O to grams H₂O (via the molar mass). It is important to arrange the conversions in a way that allows for the cancellation of units. The final answer should have 3 sig figs to match the sig figs of the given value.

Molar Mass (O₂): 2(15.998 g/mol)

Molar Mass (O₂): 31.996 g/mol

Molar Mass (H₂O): 2(1.008 g/mol) + 15.998 g/mol

Molar Mass (H₂O): 18.014 g/mol

2 H₂ + 1 O₂ -----> 2 H₂O

16.0 g O₂          1 mole            2 moles H₂O         18.014 g
---------------  x  ----------------  x  ---------------------  x  -----------------  = 18.0 g H₂O
                        31.996 g             1 mole O₂             1 mole

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1 year ago
The steps of scientific method in order are?
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The answer is choice B
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