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zavuch27 [327]
3 years ago
5

How do you break down an element?

Chemistry
1 answer:
makkiz [27]3 years ago
5 0

Answer:

<h3><em><u>elements</u></em><em><u> </u></em><em><u>cannot</u></em><em><u> </u></em><em><u>be</u></em><em><u> </u></em><em><u>break</u></em><em><u> </u></em><em><u>down</u></em><em><u> </u></em></h3>
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What would happen if the amount of chlorofluorocarbons would suddenly increase and what would happen to the climate?
mario62 [17]
If CFC increases, there will be a ozone depletion ! the UV rays starts entering and leads to mutation and deaths !

the temperature of the climate increases drastically !
4 0
3 years ago
If the mass of the baking soda before the reaction was 10 grams and the mass of the vinegar was 15 grams and all of the baking s
Masteriza [31]

Answer:

8.946g NaHCO₃,

14.475g H₂O,

1.025g CH₃COO⁻Na⁺,

0.500g CO₂.

Explanation:

Baking soda (NaHCO₃) reacts with vinegar (CH₃COOH 5%) producing  CH₃COO⁻Na⁺, H₂O and CO₂, thus:

NaHCO₃ + CH₃COOH → CH₃COO⁻Na⁺ + H₂O + CO₂

10g of NaHCO₃ are:

10g × (1mol / 84g) = 0.119 moles NaHCO₃

Moles of CH₃COOH in 15g of vinegar are:

15g vinegar × 5% = 0.75g CH₃COOH × (1mol / 60g) = 0.0125moles CH₃ COOH

After reaction, moles of NaHCO₃ that remains are:

0.119mol - 0.0125mol = <em>0.1065 moles NaHCO₃</em>

In mass:

0.1065mol ₓ (84g / 1mol) = <em>8.946g NaHCO₃</em>

Acetic acid reacts completely producing  0.0125moles of CH₃COO⁻Na⁺, water and CO₂. In mass:

CH₃COO⁻Na⁺ = 0.0125mol ₓ (82.03g / 1mol) = <em>1.025g CH₃COO⁻Na⁺</em>

H₂O = 0.0125mol ₓ (18.01g / 1mol) = <em>0.225g H₂O</em>

CO₂ = 0.0125mol ₓ (40g / 1mol) = <em>0.500g CO₂</em>

Now, 95% of vinegar is water (Doesn't react), that is:

15g × 95% = 14.25g H₂O. Total mass of water is:

14.25g + 0.225g = <em>14.475g H₂O</em>

<em></em>

Total mass is:

8.946g + 14.475g H₂O + 1.025g + 0.500g ≈ 25g. The same than initial mass following law of conservation of matter.

6 0
3 years ago
Hello tell me how to find this <br><br>k+o2&gt;&gt;k2o its o ok
umka2103 [35]

Explanation:

whay is the wietwion lol

4 0
3 years ago
What do these two changes have in common?
xz_007 [3.2K]

Answer:

Both are only physical changes.

Actually, sewing an apron and dust settling out of air are both physical changes, as an apron could be unseweed by cutting the thread used, and when we disturb the dust particles, the dust particles will fet mixed back in the air so both are physical changes.

<em />

<em>If you got helped from this answer please give me brainliest and if you didn't get what you were looking for then please tell me in the comments</em>

5 0
3 years ago
Transferring charge by touching or rubbing is called-
mina [271]

Answer:

A) Charging by contact

Explanation:

Transfer of heat by direct contact, Heat energy is conducted from the hotter medium to the cooler medium

3 0
3 years ago
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