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erastova [34]
3 years ago
9

One afternoon, a man painted his house brown. Two days later, however, the house caught fire and burned down. What two changes o

ccurred to the house?
The painting was a physical change and the burning was a chemical change

Both painting and burning were physical changes

Neither physical nor chemical changes occurred

The painting was a chemical change and the burning was a physical change
Chemistry
1 answer:
vladimir1956 [14]3 years ago
6 0

Answer:

like my answer...........

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What problems may global warming cause?
koban [17]

Answer:

Global warming stresses ecosystems through temperature rises, water shortages, increased fire threats, drought, weed and pest invasions, intense storm damage and salt invasion, just to name a few.

Explanation:

Global warming stresses ecosystems through temperature rises, water shortages, increased fire threats, drought, weed and pest invasions, intense storm damage and salt invasion, just to name a few.

6 0
2 years ago
Which statements describe Newton and the law of universal gravitation? Check all that apply.
jonny [76]

Answer:

Newton believed that gravity was a force.

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Newton was the first to have the idea that gravity is everywhere.

8 0
3 years ago
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How many moles in 2.5 liters of methane gas
Zarrin [17]

Answer:

0.155836449023405

Explanation:

The molecular formula for Methane is CH4.

The SI base unit for amount of substance is the mole.

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6 0
3 years ago
A graph of 1/[A]t vs. time will give you a straight line if the reaction is which order?
castortr0y [4]
The answer is:  "second order" .
__________________________________________________
5 0
2 years ago
PLEASE HELL ME!!!!
vazorg [7]

Answer:

<h3>The answer is 0.045 kg/cm³</h3>

Explanation:

The density of a substance can be found by using the formula

density =  \frac{mass}{volume} \\

From the question

mass of cylinder = 14 kg

Volume of a cylinder = πr²h

where

r is the radius

h is the height

radius =  \frac{diameter}{2}  \\

From the question

h = 25 cm

r =  \frac{4}{2}  = 2 \:  \:  \: cm

The volume of the cylinder is

V =  {2}^{2} (25)\pi \\  = 4 \times 25\pi \\  = 100\pi \\  = 314.159265...

We have

volume = 314.159 cm³

The density of the cylinder is

density =  \frac{14}{314.159}  \\  = 0.044563421...

We have the final answer as

<h3>0.045 kg/cm³</h3>

Hope this helps you

7 0
3 years ago
Read 2 more answers
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