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olga_2 [115]
3 years ago
9

Is solubility a physical change? Defend your answer.

Chemistry
2 answers:
expeople1 [14]3 years ago
6 0
Yes it is a physical change
fredd [130]3 years ago
3 0

Answer:

yes

Explanation:

Solubility is an observation and no chemical reaction takes place. The composition of the compound/element is not changed.

- Hope that helped! Please let me know if you need further explanation.

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Dna contains the template needed to copy itself, but it has no catalytic activity in cells. what catalyzes the formation of phos
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I am sure it is DNA polymerase.
I'm a bio major, hope I helped :)
4 0
3 years ago
What is the scientific method 1-7?
IRINA_888 [86]
#1- Identify a problem
#2- Collect info on your problem
#3- Make a hypothesis
#4- Design an experiment to test your hypothesis
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Hope this helps.
3 0
4 years ago
Based on the balanced chemical equation for the preparation of malachite, what is the composition of the bubbles formed when sod
spin [16.1K]

Answer:

Carbon Dioxide = CO2

Explanation:

The synthesis of Malachite is seen in the chemical formula:

CuSO 4 . 5H2O(aq) + 2NaCO3(aq) --> CuCO 3 Cu(OH) 2 (s) + 2Na 2 SO 4 (aq) + CO 2 (g) + 9H 2 O(l)

The bubbles mentioned in the question hints that our interest is the compounds in their gseous phase  (g).

Upon examining the chemical equation, only CO2 is in the gaseous state and hence the only one that can be formed as bubbles,

3 0
3 years ago
Group 2 in the penodic table contains the elements beryllium (Be), magnesium (Mg) , calcium (Ca) , strontium (Sf) )barium (Ba)an
mario62 [17]

Answer:

They are all alkali earth metals.

Explanation:

Their valence shell each has 2 electrons. Also, they are all shiny, silvery-white, somewhat reactive metals at standard temperature and pressure. They form alkaline solutions, hydroxides, when reacting with water and their oxides are found in the earth’s crust.

6 0
3 years ago
The absolute temperature of a gas is increased four times while maintaining a constant volume. What happens to the
weqwewe [10]

Answer:

The pressure increases by a factor of four.

Explanation:

Let's consider a gas at a given temperature and pressure (T₁, P₁). The absolute temperature of a gas is increased four times (T₂ = 4 T₁) while maintaining a constant volume. We can assess the effect on the pressure (P₂) by using Gay Lussac's law.

P₁/T₁ = P₂/T₂

P₂ = P₁ × T₂/T₁

P₂ = P₁ × 4 T₁/T₁

P₂ = 4 P₁

The pressure increases by a factor of four.

4 0
3 years ago
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