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natta225 [31]
3 years ago
13

Any moving object has _______________ energy A.kinetic B.potential C.gravitational potential

Chemistry
2 answers:
nignag [31]3 years ago
7 0

Answer:

Kinetic

Explanation:

potential means it has the POTENTIAL to move, gravitational potential energy is when an object isn't moving but the it turns into gravitational kinetic energy since gravity causes it to move. since the object in question is already in motion it proves kinetic energy as the answer.

zysi [14]3 years ago
3 0
Any moving object has kinetic energy
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An air conditioning unit turns off once it reaches its goal temperature. The house warms up and the air conditioning unit turns
-Dominant- [34]

Answer:

D ) feedback

Explanation:

When we use an air conditioner, it get turn off when reaches its required temperature and when the house warm up the air conditioning unit turns on again, that is an example of feedback.

The given condition is an example of negative feedback because in negative feedback, any change in the input is opposed by generating an output. Here also,  warming up of house (change in one direction) allows the air conditioning unit turns  on and it gives cool air (opposing that change).

Hence, the correct option is "D".

4 0
3 years ago
5 drops of 0.15 M Ki added to<br>40 drops of Na2S2O3<br>What is the final concentration of ki?​
rjkz [21]

Answer:

\boxed{\text{0.017 mol/L}}

Explanation:

Na₂S₂O₃ solution does not react with KI (it reacts with I₂), so it is simply diluting the KI, and we can use the dilution formula.

c_{1}V_{1} = c_{2}V_{2}

Data:

c₁ = 0.15 mol·L⁻¹; V₁ = 5 drops

V(Na₂S₂O₃) = 40 drops

Calculations:

(a) Calculate the total volume

V₂ = 5 + 40 = 45 drops

(b) Calculate the concentration

0.15 × 5 = c₂ × 45

0.75 = 45c₂

c_{2} = \dfrac{0.75 }{45} = \boxed{\textbf{0.017 mol/L}}

3 0
3 years ago
An electrically neutral atom has an atomic mass of 30.973 and an atomic number of 15. How many neutrons does this atom have?____
Serggg [28]

Answer: 16 neutrons

Explanation: The atomic number for any element is the number of protons in its atomic nuclei. In a neutral atom, the number of electrons are the same as the number of protons. The atomic mass (mass number) is the sum of the protons and neutrons in the nucleus. Mass number can vary due to the fact that the number of neutrons can vary. Isotopes are named for their mass numbers.

So, this element has 15 protons (atomic number), 15 electrons, and 16 neutrons (mass number minus atomic number).

This isotope is phosphorus-31, which has atomic number 15.

8 0
2 years ago
Read 2 more answers
You don’t have to answer everything, whatever you know could be really helpful
Ierofanga [76]

One

molar mass NaCl

Na                 = 23

Cl                   =35.5

Molar mass = 58.6

mols = 450 / 58.5

mols = 7.69 mols

Concentration = mols / L

mols = 7.69

Volume = 4.5 kg = 4.5 L  [1 liter weighs 1 kg]

C = 7.69 mol / 4.5 L

C = 1.71 mol/L

The question is unclear. I'm taking this to mean that you don't change the number of moles; you merely add 0.5 L to the volume.

Answer C = 7.69 / 5L = 1.54 mol / L

Two

I'm going to leave this. The wording just is not clear.

Three

More than you could grow in the entire planet earth for many centuries.

Ratio of sugar = 10 / (40 + 10 + 500) = 10 / 550 = 1:55 or 0.0182 to 1

Four

Guava  Juice = (36 / 100 ) * 100% = 36%

Water = (64/100 ) * 100 = 64%  

5 0
3 years ago
2. Give the names for the following compounds:<br> a. Col<br> c. Cu Se<br> b. Fes<br> d. PbO2
Natalija [7]

Answer: THe anwser for the first one is Carbon monoxide, Cupric selenide, iron or sulfide, lead dioxide

Explanation: i took these in science ur welcome

5 0
2 years ago
Read 2 more answers
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