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Gnom [1K]
3 years ago
12

A substance undergoes a change. Which of the following indicates that the change

Chemistry
1 answer:
LekaFEV [45]3 years ago
5 0

Answer:

change of color

Explanation:

when a substance undergoes a change of color it is an indication that it was chemical

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Question 5(Multiple Choice Worth 3 points)
Katarina [22]

Answer:

\sqrt{ | {o2}^{2} | }  \times \frac{?}{?}  \sqrt[?]{?}  \times \frac{?}{?}  \sqrt[ |?| ]{?}  \sqrt{?}  \times  \frac{?}{?}

Explanation:

exactly

4 0
3 years ago
When 4.41g of phosphoric acid (H3PO4) react with 9.25g of barium hydroxide, water and insoluble barium phosphate form. [T/I-7] a
AnnZ [28]

Answer:

2 H₃PO₄(aq) + 3 Ba(OH)₂(aq) ⇒ Ba₃(PO₄)₂(s) + 6 H₂O(l)

Explanation:

Let's consider the unbalanced equation that occurs when phosphoric acid reacts with barium hydroxide to form water and barium phosphate. This is a neutralization reaction.

H₃PO₄(aq) + Ba(OH)₂(aq) ⇒ Ba₃(PO₄)₂(s) + H₂O(l)

We will balance it using the trial and error method.

First, we will balance Ba atoms by multiplying Ba(OH)₂ by 3 and P atoms by multiplying H₃PO₄ by 2.

2 H₃PO₄(aq) + 3 Ba(OH)₂(aq) ⇒ Ba₃(PO₄)₂(s) + H₂O(l)

Finally, we will get the balanced equation by multiplying H₂O by 6.

2 H₃PO₄(aq) + 3 Ba(OH)₂(aq) ⇒ Ba₃(PO₄)₂(s) + 6 H₂O(l)

3 0
3 years ago
Which of these periods contain elements with electrons in s, p, d, and forbitals?
vodka [1.7K]

Answer:

I learnt k,l,m

Explanation:

so 1-3periods have klm and after that klmn

5 0
3 years ago
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Which type of radioactive decay does not cause change in the atomic mass of the product
Lady bird [3.3K]

Answer:

Gamma decay/radiation

Explanation:

Gamma radiation has no mass and no electrical charge which means no change in the atomic number or mass number when gamma rays are emitted.

4 0
2 years ago
What are properties of a base
Ilya [14]
Maybe this we’ll help?

5 0
2 years ago
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