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AlexFokin [52]
3 years ago
15

Can someone help me

Chemistry
2 answers:
Veseljchak [2.6K]3 years ago
5 0

Answer:

the moon and sun

Explanation:

Arlecino [84]3 years ago
3 0

Answer:

3rd option

Explanation:

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The last answer choice us D. Adding more of the chemical will hear the water but only up to a certain temperature
enot [183]

D. Adding more of the chemical will heat the water but only up to a certain temperature

<h3>Further explanation</h3>

Chemical changes are changes in the process that produce new substances that are different from the initial/ forming substances. Chemical changes are usually known as chemical reactions. So there are products/reactions and reactants and there is a change in the molecule/particle

The chemical reaction is usually followed by the release of heat, gas, change in color, precipitate substance etc

The heat that occurs in the addition of chemicals is caused by the reaction with water. But there is a constant rise in temperature when water reaches <em>its maximum capacity to react with these chemicals.</em>

Evidenced by the addition of 15 g and 20 g of chemicals, the temperature changes are constant

4 0
4 years ago
Matter can be pressed in case of a.solid b.gas c. liquid d.solid and liquid​
Nina [5.8K]

Answer:

I not sure if this is right but maybe b since its particles is more spread out?

4 0
3 years ago
the phase change in which a substance changes from a soild toa gas or vapor without changing to a liquid first is
liq [111]

SUBLIMATION

is the phase change in which a substance changes from a solid to a gas or vapor without changing to a liquid first. When a gas or vapor changes directly into a solid without first changing to a liquid, the phase change is called deposition.

8 0
3 years ago
Read 2 more answers
For the following give (1) oxidation # of metal, (2) number of d electrons, draw valence bond description of the complex, fill i
andrezito [222]

Answer:

1) the oxidation state of the metal is +2

2) there are four d electrons

3) metal valence electrons =4 ligand valence electrons= 18

4) sp^3d^2

5) octahedral geometry

Explanation:

[Cr(H2O)6]2+ is an octahedral complex. Octahedral complexes are known to have the metal ion in sp^3d^2 hybridization state. Since there are six ligands each bonding to the central metal ion, there are eighteen ligand valence electrons and four valence electrons from the metal present in the high spin complex.

The crystal field of high spin and low spin octahedral for a d4 ion is shown in the image attached.

4 0
3 years ago
What is the mass percentage of JUST water in the hydrate CuSO4 ∙5H2O? The molar mass for the whole compound is 249.71 g/mol.
Black_prince [1.1K]

answer: 29x90=103

Kjjjj

7 0
3 years ago
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