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Andrew [12]
3 years ago
6

Definition of isotopes

Chemistry
2 answers:
sukhopar [10]3 years ago
5 0
Isotopes are atoms of the same element that have different numbers of neutrons.
klasskru [66]3 years ago
3 0
Isotopes are element that exhibits isotopy ie they have the same atomic no but different mass on
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What travels through a food chain or web.
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A food chain contains a producer and 3 consumers. Primary Consumers (East producers) the arrows in a food chain show the flow of energy, from the sun or hydrothermal vent your a top predator.
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3 years ago
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How many Sodium atoms are in 2.00 mols of Na2O
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There’s 1024 atoms of sodium in 2 moles of sodium
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A student experimentally determines the density of a metal cube. The edge length of the cube is measured using calipers. The cub
IgorC [24]

Answer:

10.9%.

Explanation:

The first thing to do in order to solve this question is to Determine the value for the volume of the the cube. This can be done by taking the cube root of the length of the cube;

The volume of the cube = (length of the cube)^3 = length × length × length = 1.72 × 1.72 × 1.72 =( 1.72)^3 = 5.09cm^3.

The next thing you do is to Determine the exponential density, the can be done by using the formula below;

The exponential density = mass/ volume = 55. 786/ 5.09 = 10.96 g/cm^3.

Therefore, the percent error = (true density of the cube - exponential density of the cube)÷ true density of the cube × 100.

Hence, the percent error = 12.30 - 10.96/12.30 × 100 = 10.9%.

8 0
2 years ago
A gas is at a pressure of 4.30 atm. what is this pressure in kilopascals? in mm hg?
Monica [59]
Units to measure pressure are as follows
atm - atmospheric pressure units
kPa - kilo Pascals
mm Hg - milimeters Hg
conversion units are;
 1 atm = 101 325 Pa
therefore 4.30 atm = 101 325 Pa / atm x 4.30 atm = 435.7 Pa

1 atm = 760.0 mm Hg
 4.30 atm = 760.0 mm Hg / atm x 4.30 atm = 3268 mm Hg

answers are 435.7 Pa and 3268 mm Hg
5 0
3 years ago
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Which statement is true of a reversible reaction at equilibrium?
Vedmedyk [2.9K]

Answer:

D.

The concentration of reactants and the concentration of products are constant.

Explanation:

pls mark as brainliest

7 0
3 years ago
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