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Kay [80]
3 years ago
9

What was the 'elixir of life' ​

Chemistry
1 answer:
4vir4ik [10]3 years ago
4 0
A magical or medicinal potion/solution
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Anybody can help? <br> - 20 points
strojnjashka [21]

Answer:

I think its carbon because of all the chemicals being used in that air.

7 0
3 years ago
An atom has 2 protons in its nucleus. Which of the following must be true for this atom to have no net electrical charge?
sp2606 [1]
The 2 correct options I guess are A and D
3 0
3 years ago
Read 2 more answers
Copper (II) oxide can be heated until it decomposes into elemental copper and oxygen gas. Is 0.695 grams of Copper (II) oxide is
insens350 [35]

Answer:

0.55 g of Cu can produced by this decomposition

Explanation:

Let's think the reaction of decomposition:

2CuO → 2Cu + O₂

Ratio is 2:2. 2 moles of CuO can decompose into 2 moles of Cu and 1 mol of oxygen.

Let's convert the mass of oxyde to moles → 0.695 g. 1 mol/ 79.55 g =

8.74×10⁻³ moles

8.74×10⁻³ mol of CuO decompose to 8.74×10⁻³ moles of Cu

Let's find out the mass → 8.74×10⁻³ mol . 63.55 g/1mol = 0.55 g

4 0
3 years ago
Read 2 more answers
How would the volume of helium in a balloon be affected if the balloon was placed in a room where air temperature is lower?
Alexus [3.1K]

Answer:

The volume will decrease.

Explanation:

According to Charles' Law, the volume of a gas is directly proportional to its temperature.

V = kT

Thus, if T decreases, V decreases.

8 0
3 years ago
Read 2 more answers
What happens if a chemical and physical change combine together?
sweet-ann [11.9K]

In a chemical change, a new substance is made, like when you burn a candle. In a physical change, no new substance is made, like when water turns to ice.

Source: https://www.generationgenius.com/learn-physical-and-chemical-changes/ (Found on Google :3 )

8 0
3 years ago
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