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Mnenie [13.5K]
3 years ago
5

My teacher never taught me how to do this helpppp!!!!!!!

Chemistry
1 answer:
djverab [1.8K]3 years ago
6 0
Just search up how much the weight is equal to another, then multiply it, thats what i do lol sorry if im no help
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Why is it beneficial for chemists to understand as many periodic trends as they can?
Alexandra [31]

Answer:

It can help identify elements quicker.

Explanation:

3 0
3 years ago
A sample of methane gas occupies 4.50 gallons at a temperature of 80.0 F. If the pressure is held constant, what will be the vol
Marat540 [252]

Answer:

21.19 L or 5.6 gallons

Explanation:

Data Given

initial volume V1 = 4.50 gallons

convert volume from gallons to L

                               1 gallon = 3.78541 L

                               4. 50 gallon = 3.785 L x 4.50

So,                        

initial volume V1 =  17.03 L

final Volume V2 = ?

initial Temperature T1  = 80° F

convert Temperature to Kelvin

                              T1 = ( 80° F -32) / 1.8 +273

                               T1 = 26.7° C + 273 = 299.7 K

final Temperature T2 = 100° C

convert Temperature to Kelvin

                                  T2 = 100° C + 273 = 373 K

Solution:

This problem will be solved by using charles' law equation at constant pressure.

The formula used

                      V1 / T1 = V2 / T2

As we have to find out volume, so rearrange the above equation

                      V2 = V1 x T2 / T1

Put value from the data given and conversion information in above equation

V2 =  17.03 L x 373 K / 299.7 K

V2 =  21. 19 L

So the final volume of Methane gas = 21.19 L

Or for Volume in gallons

1 L = 0.26

21.19 x 0.264 = 5.6 gallons

7 0
3 years ago
Which material is very strong and tough but shows very little elongation as it absorbs energy?
natita [175]
Kevlar would be the answer!! enjoy the rest of your day broskies!!!
7 0
3 years ago
2 Which particles have approximately the same mass?
Lelu [443]
An electron has a relative mass of 0, whilst an alpha particle has a relative mass of 4
An electron has a relative mass of 0, whilst a proton has a relative mass of 1
A neutron has a relative mass of 1, whilst an alpha particle has a relative mass of 4
A neutron has a relative mass of 1, and a proton also has a relative mass of 1

7 0
3 years ago
What internal and external structures do giraffes have that help it survive? List at least 3 structures and explain how each str
Debora [2.8K]

Answer:

The neck, Tongue, Heart and circulation and Lungs.

Explanation:

The Neck: The total length of the giraffe's neck is 6 feet and carries the muscles of about 550 pounds. But the unique characteristics is that it has same vertebrae as humans have i.e. 7.  And to support these heavy muscles at the base of the neck spines are there projecting upwards.

The Tongue: Giraffe has a very avaricious long tongue that helps it to gets different vegetation.

Heart: Surprisingly the heart of the giraffe is small in structure yet powerful. And the blood pressure is quite high, double relatively to human so to pump the blood to its brain along with the long neck.

7 0
3 years ago
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