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Art [367]
4 years ago
6

Sonia was experimenting with electric charges. She tied two inflated balloons together, held them next to each other, and rubbed

both with a piece of wool.
What did Sonia observe, and why?
Chemistry
2 answers:
Sladkaya [172]4 years ago
6 0
Sonia observed that the two balloons repelled each other. This is because both balloons acquired the same charge when she rubbed them with the piece of wool, and like charges repel each other.
Daniel [21]4 years ago
6 0

they attract eachother??????

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If the forward reaction is favored in the equilibrium, what will increase?
Lorico [155]

Answer:

Option C:- concentration of products

Explanation:

According to Le Chateleir's principle,

if the forward reaction is favored in the equilibrium then concentration of products will increase and concentration of reactants will decrease.

If the reverse reaction is favored in the equilibrium then concentration of products will decrease and concentration of reactants will increase.

5 0
4 years ago
1) you are building a model plane that needs small block inside to balance its weight. you find that the block material you are
blagie [28]

Answer:

then it will move 1 too 2

right maybe

Explanation:

7 0
3 years ago
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What is the second most abundant element in stars? A. helium B. iron C. hydrogen D. oxygen
devlian [24]
<span>The </span>abundance of a chemical element<span> is a measure of the </span>occurrence<span> of the </span>element<span> relative to all other elements in a given environment. Abundance is measured in one of three ways: by the </span>mass-fraction<span> (the same as weight fraction); by the </span>mole-fraction<span> (fraction of atoms by numerical count, or sometimes fraction of molecules in gases); or by the </span>volume-fraction<span>. Volume-fraction is a common abundance measure in mixed gases such as planetary atmospheres, and is similar in value to molecular mole-fraction for gas mixtures at relatively low densities and pressures, and </span>ideal gas<span> mixtures. Most abundance values in this article are given as mass-fractions.

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8 0
3 years ago
Please explain your answer! <br><br> Thanks!
Yuri [45]
Hello Gary!
*Sorry if I'm late*

Your answer is going to be 65.
Element A (which is actually Zinc) has the atomic number of 65. (I remember having got memorize this also).
Pretty much the explanation is that the number of patrons is equivalent to the element's atomic number!

Hope this helps!
Have a nice day :D
8 0
3 years ago
Read 2 more answers
If 10.5 L of a gas at 0.98 atm has its pressure increased to 1.50 atm, what is the new volume?
serg [7]

Answer:

The new volume of this gas is 6.86 liters.

Assumption: the temperature of this gas stays the same, and this gas is ideal such that Boyle's Law applies.

Explanation:

By Boyle's Law, the volume of an ideal gas shall be inversely proportional to the pressure on it when temperature stays the same (as in an isothermal process.)  

In other words,

\displaystyle V \propto \frac{1}{P},

where

  • V is the volume of the gas, and
  • P is the pressure on the gas.

P_1 \cdot V_1 = P_2 \cdot V_2.

\displaystyle V_2 = \frac{P_1 \cdot V_1 }{P_2}.

Assume that this gas is ideal. Also assume that this increase in pressure is isothermal. Apply Boyle's Law to find the new volume of this gas:

\displaystyle V_2 = \frac{P_1 \cdot V_1 }{P_2} = \rm \frac{0.98\;atm \times 10.5\; L}{1.50\; atm} = 6.86\; L.

8 0
4 years ago
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