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BlackZzzverrR [31]
4 years ago
8

How would one know if something is an element?

Chemistry
2 answers:
tankabanditka [31]4 years ago
7 0
An element is a substance made from only 1 type of atom. It is a pure substance and they are the building blocks for the rest of matter in the world.
hichkok12 [17]4 years ago
6 0
You would be able to tell if you could see it on the period table ig.
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The water behind a dam has potential energy that can be converted to kinetic energy to turn a turbine
Savatey [412]
This is true because the water would have gravitational potential energy that is caused by the water being held back by the dam and the water wanting to flow down.

This can be converted into kinetic energy when given the chance to, such as having a turbine on the dam.

Hope this helps! :)
6 0
4 years ago
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Protons, Neutrons, and Electrons Practice Worksheet
ANTONII [103]

Answer:

Sorry I am not good at chemistry

Explanation:

6 0
3 years ago
Chemical analysis shows that citric acid contains 37.51% C, 4.20% H, and 58.29% O. What is the empirical formula for citric acid
Fiesta28 [93]

The empirical formula for the citric acid is C₆H₈O₇

<h3>Data obtained from the question </h3>
  • Carbon (C) = 37.51%
  • Hydrogen (H) = 4.20%
  • Oxygen (O) = 58.29%
  • Empirical formula =?

Divide by their molar mass

C = 37.51 / 12 = 3.126

H = 4.2 / 1 = 4.2

O = 58.29 / 16 = 3.643

Divide by the smallest

C = 3.126 / 3.126 = 1

H = 4.2 / 3.126 = 1.34

O = 3.643 / 3.126 = 1.17

Multiply through by 6 to express in whole number

C = 1 × 6 = 6

H = 1.34 × 6 = 8

O = 1.17 × 6 = 7

Thus, the empirical formula for the citric acid is C₆H₈O₇

Learn more about empirical formula:

brainly.com/question/24818135

7 0
2 years ago
A ball has a 17 j of kinetic energy and its mechanical energy is 25 j. Calculate its potential energy
ycow [4]

The potential energy of the ball is 8 J.

<h3>What is mechanical energy?</h3>

Mechanical energy is given as the energy possessed by an object to do work. It is given as the sum of the kinetic energy and potential energy.

Mechanical energy = Kinetic energy + Potential energy

The given ball has:

  • Mechanical energy = 25 J
  • Kinetic energy = 17 J

The potential energy is given as;

25 J = 17 J + Potential energy

Potential energy = 25 J - 17 J

Potential energy =  8 J

The potential energy of the ball is 8 J.

Learn more about potential energy, here:

brainly.com/question/24284560

#SPJ4

3 0
2 years ago
A sample of seaweed contains 1 liter of water and has 50 grams of salt dissolved in its cells. The seaweed is placed in a soluti
masha68 [24]

seaweed having 50 g  salt in 1 L  water. The bucket contains 150 g of salt in 2 L of water

amount of water present in bucket is twice to amount of water in weed

V¬_water bucket=2×V_water weed

At equilibrium, volume of water in weed is x and volume in bucket is y but concentration remain same as follows:

50 /x=150 /y\\ Y = 3 x

At equilibrium, weed loose z L from 1 L  water to bucket containing 2 L as follows:

(2 + z) = 3 (1-z)\\ (2 + z) = 3 – 3 z\\ Z = 0.25 L

Thus, Weed will loose 0.25 L of water

5 0
3 years ago
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