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Rainbow [258]
3 years ago
12

PLEASE ANSWER

Chemistry
1 answer:
mihalych1998 [28]3 years ago
7 0

Answer: B. Both are right. Refraction causes the different wavelengths to become visible.

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11
Ad libitum [116K]

Explanation:

No because the person on the bike is going faster then the person on foot.

8 0
3 years ago
Which of the following would increase friction?
KiRa [710]
B. Sand.

Sand would definitely increase friction because of the roughness of it surface. When its surface comes with another rough surface it would tend to increase friction. All other options given tend to reduce friction one way or the other.
5 0
2 years ago
Chemical reactions can be detected by precipitation of a _____ from a solution.
RideAnS [48]

Answer: solid

Explanation: Chemical reactions are those which involve rearrangement of atoms.

Chemical changes are accompanied by following changes:

1) Absorption or release of heat

2) Change in color

3) Formation of gas bubbles

4) Formation of a solid product called as precipitate

Example of formation of precipitate or solid in chemical reaction:2AgNO_3(aq)+BaCl_2(aq)\rightarrow 2AgCl(s)+Ba(NO_3)_2(aq)


7 0
2 years ago
Read 2 more answers
Resistance of a material being scratched in known as
Wittaler [7]
Resistance of a material being scratched in known as: Hardness
3 0
2 years ago
Read 2 more answers
If 45.0 mL of a 0.0500 M HNO3, 10.0 mL of a 0.0500 M KSCN, and 30.0 mL of a 0.0500 M Fe(NO3)3 are combined, what is the initial
jeka94

Answer:

the  initial concentration of SCN- in the mixture is 0.00588 M

Explanation:

The computation of the initial concentration of the SCN^- in the mixture is as follows:

As we know that

KSCN \rightarrow K^ + SCN^-

As it is mentioned in the question that KSCN is present 10 mL of 0.05 M

So, the total milimoles of SCN^- is

= 10 × 0.05

= 0.5  m moles

The total volume in mixture is

= 45 + 10 + 30

= 85 mL

Now the initial concentration of the SCN^- is

= 0.5 ÷ 85

= 0.00588 M

hence, the  initial concentration of SCN- in the mixture is 0.00588 M

5 0
3 years ago
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