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Neko [114]
4 years ago
10

During which of the following chemical changes does a precipitate form?

Physics
2 answers:
babymother [125]4 years ago
5 0

Answer is B.........

kolbaska11 [484]4 years ago
3 0

Answer: Option (B) is the correct answer.

Explanation:

A solid which is not soluble and has formed from the liquid solution is known as a precipitate.

For example, when lemon juice is added to milk then it results in the formation of paneer (cheese) that is insoluble.

Hence, we can conclude that during the addition of lemon juice into milk will bring a chemical change by forming a precipitate.

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The velocity time graph of an object is shown below. How far does the object travel in the time interval t =4 s to t = 6 s?
Trava [24]

The distance covered by the object between t =4 s and t = 6 s is 4 m

Explanation:

In a velocity-time graph, the distance covered by the object represented can be found by calculating the area under the curve.

Therefore, the distance covered by the object between t = 4 s and t = 6 s is the area under the curve between 4 s and 6 s.

We see that we have to calculate the area of a triangle, with:

Base:

b=6-4 = 2

And height:

h=4-0 = 4

Therefore, the area is

A=\frac{1}{2}bh=\frac{1}{2}(2)(4)=4

So, the distance covered by the object is 4 m.

Learn more about distance:

brainly.com/question/3969582

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3 0
4 years ago
Collette has a prediction that college students ' immune systems have declined due to the use of hand sanitizers . This idea is
Nataly_w [17]

The idea that "students ' immune systems have declined due to the use of hand sanitizers " is a hypothesis.

The term hypothesis refers to an intelligent guess or idea often based which is subject to scientific investigation via experiments.

A hypothesis may be right or wrong. We can only prove a hypothesis by subjecting it to a series of rigorous experiments.

Thus Collette's idea is a hypothesis.

Learn more: brainly.com/question/18284466

5 0
3 years ago
f it weren't for Newton's _____ law, regarding inertia, the planets would travel in a straight line into space. Gravity is the o
Romashka [77]
If it weren't for Newton's FIRST law.
6 0
3 years ago
Draw the graphs for exothermic and endothermic reactions Label: axes, reactants, products, Energy of reaction, heat energy chang
nikdorinn [45]

Answer:

axes, reactants, products, Energy of reaction, heat energy

Explanation:

axes, reactants, products, Energy of reaction, heat energyaxes, reactants, products, Energy of reaction,grreactantsaphs heat energy

3 0
3 years ago
In a generator, mechanical energy is converted into which of the following?
Serggg [28]

In a generator, mechanical energy is converted electrical energy. The answer is letter D. the mechanical energy in the generator produces energy by making the machines work and then transmitting this into the power lines of commercial industries, communities and others.

8 0
4 years ago
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