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Hoochie [10]
3 years ago
6

What are things that cause change

Chemistry
2 answers:
inessss [21]3 years ago
5 0

Explanation:

A catalyst means "something that causes activity,an event, or change." And usually,these events and changes are big.

I hope it's helpful!

shutvik [7]3 years ago
5 0
Ummmmmm what ? It’s kinda confusing
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4. The cloud of interstellar dust and gas that forms a star is known as
Ede4ka [16]
It's called a nebula or nebulae (plural). They are not only massive clouds of dust, hydrogen and helium gas, and plasma; they are also often “stellar nurseries” – i.e. the place where stars are born.
6 0
3 years ago
¿Cuál era su juego favorito cuando eran niños?​
blagie [28]

Answer:

mi juego favorito probablemente sería Mine craft cuando era más joven, aunque sigue siendo uno de mis juegos favoritos

Explanation:

7 0
3 years ago
The pH value of 0.1 mol dm-3 of acid U is 1. Which statement is true about acid U?
lesya [120]

Answer:

the degree of ionization in water is high

Explanation:

The term pH is defined as the negative logarithm of hydrogen ion concentration.

Hence;

pH = -log[H^+]

The pH scale shows the degree of acidity or alkalinity of a solution. A solution of pH 1 is a strong acid. A strong acid dissociates completely in solution.

Hence, acid U has a high degree of ionization in water.

3 0
3 years ago
Select all that apply. Which statements concerning this diagram are correct?
belka [17]
Hello, let me break this down for you! :)
A is your energy of your reactants, B is your activation energy, so the total value could be found from B-Y. C is the value of your energy of your products. X is your delta H value. So in this, your products are higher energy than the reactants, so H is + and e2-E1 is positive so E2 >E1
Therefore your answers would just be <span>E2 > E1 and
</span><span>Hrxn<span> is positive.
Hope this helps! If you have any other questions or need further explanation just let me know! :)
</span></span>
5 0
4 years ago
Read 2 more answers
What is Copper (II) Oxide balanced
ikadub [295]
Copper(II) oxide or cupric oxide is the inorganic compound with the formula CuO. A black solid, it is one of the two stable oxides of copper, the other being Cu2O or cuprous oxide. As a mineral, it is known as tenorite. It is a product of copper mining and the precursor to many other copper-containing products and chemical compounds
5 0
3 years ago
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