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True [87]
3 years ago
9

In chemistry, n molecules of an ideal gas have pressure (p), volume (v), and temperature (t) that stand in the following relatio

n, where r is a constant. solve the equation for n, the number of molecules.
Mathematics
1 answer:
maks197457 [2]3 years ago
7 0
The ideal gas law is PV=nRT
If you're looking for n then, the formula becomes: n= PV/RT
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You fly a helicopter for 20 minutes that goes at a speed of 240 km per hour. How far did you go?
Stells [14]

Answer:

4800 km

Step-by-step explanation:

240*20=4800

4 0
3 years ago
Write a decimal expansion for 2/9. Chose the correct decimal notation.
Anit [1.1K]

Answer:0.222222

Step-by-step explanation:

DIVIDE 2 BY 9

8 0
3 years ago
For a class experiment, Danny's class weighed a log before and after subjecting it to termites. Before subjecting it to termites
m_a_m_a [10]

Answer:

4.75 pounds

Step-by-step explanation:

Before the termites: 5 pounds

After the termites: 1/4 of a pound

Amount that the termites took: x

5 - x = 1/4

Add x to both sides of the equation

5 = 1/4 + x

Subtract 1/4 from both sides of the equation

4 3/4 = x

4 3/4 = 4.75

The termites took 4.75 pounds from the log

Hope this helps :)

7 0
3 years ago
The rectangular prisms shown below are similar. What are the values of x and y?
Marrrta [24]
The answer would be 6
3 0
3 years ago
Read 2 more answers
Sylvie finds the solution to the system of equations by graphing. y = 2/3 x + 1 and y = -2/3x – 1
Nikolay [14]

Remark

One of the ways you could solve this is to go to a place like Desmos and graph it for yourself. Then at least you would know what the answer looked like. Another way is to solve for the x value by equating the equations since the y has to be the same. We'll do both.

Solve For X

(2/3)x + 1 = -(2/3)x - 1    Add 1 to both sides

(2/3)x + 1 + 1 = - 2/3x    Subtract (2/3x) from both sides.

2 = (-2/3)x - (2/3)x

Show the graph and comment

Notice that there is only one graph given that has a value of x = - 3/2 Normally you are not that lucky. Thanks for putting the graphs in. We are usually not that lucky and have to guess at the answer if it is a graph.

2 = - 4/3x                      Multiply both sides by 3

2 * 3 = - 4x    

6 = - 4x                          Divide by - 4

6/-4  = x                        Reduce

-3/2  = x

Remark

The x value is wrong for the one on the left.  It is also wrong for the third one from the left.  And the last graph is also incorrect.     Only the second from the left gives the right answer.                                      

5 0
3 years ago
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