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muminat
3 years ago
8

What are four signs a chemical reaction has taken place?

Chemistry
1 answer:
RoseWind [281]3 years ago
6 0

1. Change in temperature

2. Gas given off (bubbles)

3. Color change

4. Salts made

Happy to help! Please mark as Brainliest!

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La luna es materia? ayuda pisos es para yaaaaaaa!! ;)​
Valentin [98]

Answer:

La Luna ? Deberia ser materia

Explanation:

6 0
3 years ago
The direction of electrical force is based on the fact that like charges will___each other.
NeTakaya

Answer:

repel

Explanation:

When it comes to electrical forces, "opposites charges attract" while "like charges repel."

There are primarily two types of charges: positive charge and negative charge. The forces they exert upon each other will depend on their charges. The<u> positive charge has an </u><em><u>attractive force</u></em><u> to a negative charge.</u> On the contrary,<u> it has a</u><em><u> repulsive force</u></em><u> to the same positive charge</u>. Thus, it will repel each other.

So this means that <em>opposite charges will draw closer together</em> while<em> like charges will move apart from each other.</em>

7 0
3 years ago
Oxygen has 8 electrons. Is it chemically inert or reactive?
liraira [26]

Answer:

Reactive

Explanation:

8 0
3 years ago
Read 2 more answers
The Henry's law constant (kH) for O2 in water at 20°C is 1.28 × 10−3 mol/(L·atm). (a) How many grams of O2 will dissolve in 4.00
Burka [1]

Answer:

Solubility of O₂(g) in 4L water = 3.42 x 10⁻² grams O₂(g)

Explanation:

Graham's Law => Solubility(S) ∝ Applied Pressure(P) => S =k·P

Given P = 0.209Atm & k = 1.28 x 10⁻³mol/L·Atm

=> S = k·P = (1.28 x 10⁻³ mole/L·Atm)0.209Atm = 2.68 x 10⁻³ mol O₂/L water.

∴Solubility of O₂(g) in 4L water at 0.209Atm = (2.68 x 10⁻³mole O₂(g)/L)(4L)(32 g O₂(g)/mol O₂(g)) = <u>3.45 x 10⁻² grams O₂(g) in 4L water. </u>

4 0
3 years ago
An artificial reef is intended to affect the ocean ecosystem by — А A removing pollution from the water B В providing shelter fo
Mama L [17]

Annswer is B Explanation:acording to this diagram i f

gffgdffdggfdfgd

3 0
3 years ago
Read 2 more answers
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