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patriot [66]
3 years ago
5

Where does your socks disappear

Chemistry
1 answer:
max2010maxim [7]3 years ago
3 0
Your sock disappear in the fridge
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What is the mass of a hydrogen atom?​
Goryan [66]

Answer:

1.00784 u

Explanation:

8 0
3 years ago
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Describes changes<br> in energy during a chemical reaction?
zysi [14]

Answer:

Yes

Explanation:

Chemical reactions often involve changes in energy due to the breaking and formation of bonds. Reactions in which energy is released are exothermic reactions, while those that take in heat energy are endothermic.

3 0
3 years ago
One of the great upcoming sports in the Olympics is the sport of curling. Write a brief essay on the uses of momentum collisions
Usimov [2.4K]

The Olympic sport of curling is one that is practically designed to show Physics in motion. Curling is a sport in which two teams alternate sliding smoothed stone pucks down an ice rink court with the intent to seat their stone closest to the center of the target (called the house). Each team has eight stones, meaning that the team that goes second has the (could be) massive advantage of sending the last stone.  
The mass of the stone is important in that the more massive a stone (m) and the speed at which it travels (v) dictates it's momentum (momentum=mxv). As the curling stone slides down the ice (which is relatively frictionless unless acted upon by other players or objects) and having inertia, continues in it's straight course (again, unless acted upon by outside forces). If the stone hits another stone, it transfers some of its momentum in an elastic collision to that stone and the original stone is deflected in a calculable manner.   
Collisions are used in the game to either clear opponent's stones from the house or out of their defensive positions, or to make adjustments to one's stones present in the house, all based on the momentum of the moving stone, and its transference.
8 0
3 years ago
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Calculate the pH of a buffer solution that contains 0.25 M benzoic acid (C 6H 5CO 2H) and 0.15M sodium benzoate (C
gtnhenbr [62]

Answer:

pH=3.97

Explanation:

Hello,

In this case, for the calculation of the pH of the given buffer we need to use the Henderson-Hasselbach equation:

pH=pKa+log(\frac{[base]}{[acid]} )

Whereas the pKa for benzoic acid is 4.19, the concentration of the base is 0.15 M (sodium benzoate) and the concentration of the acid is 0.25 M (benzoic acid), therefore, the pH turns out:

pH=4.19+log(\frac{0.15M}{0.25M} )\\\\pH=3.97

Regards.

4 0
3 years ago
The rate at which energy is transferred is called a power b kinetic energy c work d time
grandymaker [24]
This is one of the definitions that is used to define C. Work. It is a change in energies from one form to another within some time frame.
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3 years ago
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