1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
strojnjashka [21]
3 years ago
11

A hydroelectric power station, like the hoover dam, produces electrical energy from

Chemistry
1 answer:
Minchanka [31]3 years ago
5 0
Answer:
Mechanical/kinetic
You might be interested in
If it is 9 am in San Francisco, is it also 9 am in New York? Why or why not?
lys-0071 [83]

Answer:

san franciso is 3 hours beind and with NewYork

Explanation:

5 0
3 years ago
Read 2 more answers
A certain electrolyte solution contains 1 gram of salt for every 8 grams of sugar and every 200 grams of water. If the sugar to
12345 [234]

Answer:

The resulting solution contains approximately 666 g of water.

Explanation:

In the initial solution we have:

1g salt : 8g sugar : 200g water

This means that the ratios are:

\frac{salt}{sugar}  = \frac{1}{8} \\\\\frac{sugar}{water} = \frac{8}{200} =\frac{1}{25}

In the final solution we have:

5g salt: xg sugar: yg water

The new ratios are:

\frac{salt}{sugar} = \frac{3}{8} \\\\\frac{sugar}{water} = \frac{1}{50}

Now we can calculate the amount of sugar in the final solution:

\frac{salt}{sugar}  = \frac{5}{x} =\frac{3}{8} \\\\X = 13.333 g

Finally, we calculate the amount of water:

\frac{sugar}{water} = \frac{13.333}{y} = \frac{1}{50} \\y = 666.667 g

4 0
3 years ago
Consider the reaction below. 2K+Br2------>2K+ +2Br-
sergeinik [125]
Answer: only Br2.

Justification.

In  a chemical reaction the element that gains electrons experiments a reduction in its oxidation state, that is why it is said that it is reduced.

So, to know what element is being reduced you need to calculate the oxidation states of the elements involved.

Here I indicate the oxidation states of each element if the reaction putting them inside parenthesis:

Reactants side          Products side

K (0)                           K (1+)
    
Br (0)                          Br(1-)

So, K lost one electron, increasing its oxidation statefrom  0 to 1+, meaning that it is being oxidized.

And, each atom of Br gained one electron, reducing its oxidation state from 0 to 1-, meaning it is being reduced.

Therefore, the answer is that Br2 is the substance being reduced.
3 0
3 years ago
Read 2 more answers
Does an atom have to have the same number of portions and neutrons in its nucleus? Yes or no
rosijanka [135]

Answer:

Yes

Explanation:

Because if you multiply it with waffles you get salad

3 0
3 years ago
Read 2 more answers
Identify the functional groups attached to the benzene ring as either, being electron withdrawing, electron donating, or neither
Dominik [7]
-OH is elctron donating  -C=-N is electron withdrawing  -O-CO-CH3 is electron withdrawing  -N(CH3)2 is electron donating  -C(CH3)3 is electron donating  -CO-O-CH3 is electron withdrawing  -CH(CH3)2 is electron donating  -NO2 is electrong withdrawing  -CH2
8 0
4 years ago
Other questions:
  • Name each subatomic particle, its charge, and its location in an atom.
    8·1 answer
  • What is the mass number of an ion with 108 electrons, 157 neutrons, and a +1 charge?
    9·2 answers
  • #18: all atoms of the same element have the same<br> a)number of neutrons<br> b)atomic number
    11·1 answer
  • Which gas has approximately the same density as c2h6 at stp no nh3 h20 so2?
    13·1 answer
  • Give five properties of water.
    8·2 answers
  • What chemical change causes cake to rise?
    10·1 answer
  • Why might it be important to test one variable at a time when doing an experiment?
    6·1 answer
  • 4. A salvage operator recovered coins believed to be gold. A sample weighed 385.000g and has a volume of 20.0mL. Were the coins
    14·1 answer
  • Please help!!! will give brainliest!!! 30 points! (need to put roman numeral in answer)
    9·1 answer
  • mr. garcia uses magnets to hold a poster on a steel filing cabinet because a main component of steel is iron. carbon. plastic. g
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!