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agasfer [191]
3 years ago
10

PLEASE HELP ASAP WILL GIVE BRAINLIEST

Chemistry
1 answer:
soldier1979 [14.2K]3 years ago
8 0

Answer:

X+ ion cation is smaller than neutral atom because when one or more electrons are lose by an atom it usually result in lose of shell.

And when electron is removed positive/ negative charged ratio increas which causes more effective nuclear charge.

The more effective nuclear charge the less its size.

Explanation:

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Blizzard [7]

Answer:

o temperature increases

5 0
3 years ago
Is crushing a rock a chemical or physical change?
aalyn [17]
Physical change because you didn't change the chemical compound 
4 0
3 years ago
PLEASE HELP WILL GIVE 20PTS AND WILL MARK BRAINLIEST FOR RIGHT ANSWER!!!
Marysya12 [62]

Answer:

C) 0.457

Explanation:

The ratio between O2 and H2O is 1:2 according to the balanced equation. You can find how many moles is O2 by : 5.12/22.4 = 0.22857 ( 1 mole = 22.4 litters)

Moles of H2O will be 0.22857 * 2 = 0.457142.

Therefore answer C)

7 0
3 years ago
Hydrogen is an element with two naturally occurring isotopes: 2 H and 3 H. This means that 2 H, which has a mass number of 2, ha
Dmitry_Shevchenko [17]

Answer:

TRUE.

Explanation:

Mass Number is the sum of protons and neutrons present in the nucleus of an atom. Isotopy is a phenonmenon that occurs when atoms of same elements have different mass number (Number of neutrons).

2H isotope has 1 proton and 1 neutron.

3H isotope has 1 proton and 2 neutrons.

This meeans 2H isotope has fewer neutrons when compared to the 3H isotope. The correct option is TRUE.

8 0
3 years ago
The melting point of table salt is 801 degrees celsius. is this a physical or chemical property?
Valentin [98]
It is a Physical property because like water it changes into a ice cube but it can be melted into water or be turned back into an ice cube.
5 0
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