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kipiarov [429]
3 years ago
6

1.)Which is the correctly balanced equation?

Physics
1 answer:
iVinArrow [24]3 years ago
8 0
A. The correctly balanced equation is that in which the number of atoms of a certain element at the left-hand side is similar to that in the right hand side or the reactant side and product side, respectively. From the given equation, the answer would be,

       C. Cl2 + 2NaI --> 2NaCl + I2


B. In the given chemical reaction above, heat is emitted such that it appears in the product side of the equation. Hence, this is an example of a combustion reaction. 

C. Similar with the reasoning in letter A, the answer to this item is,
          B. 2H2 + O2 --> 2H2O
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Two parallel metal plates are at a distance of 8.00 m apart.The electric field between the plates is uniform directed towards th
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Answer:

C

Explanation:

Formula E=F/C also E=V/d

In this case use the second formula; E=V/d

Data given; E=4N/C d=8m

So v=E X d

     V=4x8=32V

k.e=eV= 2X32=64eV

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3 years ago
Which of the following best explains why most chemical reactions proceed more quickly when the concentrations of reactants are i
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A More concentrated means more collisions per unit volume, and as the volume stays the same and only concentration changes, the there are more collisions
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3 years ago
How much heat is required to raise 100 grams of water (c= 4.18) by 5 degrees Celsius?
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Answer:

Heat capacity, Q = 2090 Joules.

Explanation:

Given the following data;

Mass = 100 grams

Specific heat capacity = 4.18 J/g°C.

Temperature = 5°C

To find the quantity of heat required;

Heat capacity is given by the formula;

Q = mct

Where;

Q represents the heat capacity or quantity of heat.

m represents the mass of an object.

c represents the specific heat capacity of water.

t represents the temperature of an object.

Substituting into the formula, we have;

Q = 100*4.18*5

Heat capacity, Q = 2090 Joules.

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A swimming pool is an example of an open system. The pool loses 10,500 J
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Answer: A a decrease of 8000

Explanation: 10,500 - 2,500= 8000

8 0
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