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Sara

@-Saruu-

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Posted: 14 years ago

#131

I Can help in history and english😳

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Sara

@-Saruu-

Inactive

28

+ 5

Posted: 14 years ago

#132

PLS Help Like URGENTLYY

EEks Dont understand my hmwk due tomoorrow and its 8:30 pm now:/

ermm help?

quwestion

apart from water vapour 2 gases account for 99% of the atmosphere of our planet,name them?

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v3gradev09

@v3gradev09

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Posted: 14 years ago

#133

I need help...

How would you do this.

This is dimensional analysis: (Chemistry)

150cg = g

Thanks for helping ! :)

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v3gradev09

@v3gradev09

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Posted: 14 years ago

#134

Originally posted by: -Saruu-
PLS Help Like URGENTLYY
EEks Dont understand my hmwk due tomoorrow and its 8:30 pm now:/

ermm help?

quwestion

apart from water vapour 2 gases account for 99% of the atmosphere of our planet,name them?

Two gases make up the bulk of the earth's atmosphere: nitrogen (), which comprises 78% of the atmosphere, and oxygen (), which accounts for 21%.

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akhl

@akhl

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Posted: 14 years ago

#135

Originally posted by: v3gradev09
I need help...

How would you do this.

This is dimensional analysis: (Chemistry)

150cg = g

Thanks for helping ! :)

Could u tell the meanings of cg and g here? Are you sure you typed the complete problem?

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596277

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Posted: 14 years ago

#136

Originally posted by: v3gradev09
I need help...

How would you do this.

This is dimensional analysis: (Chemistry)

150cg = g

Thanks for helping ! :)

cg and g are the SI Prefixes. cg is 10^-2, and g is 10^0 because it's a base unit.

150cg = g?

1.5 *10^2cg/1 *10^-2g/1cg = 1.5 g.

I think this is right:\ And I got the 1.5 by converting the 150 into scientific notation.

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akhl

@akhl

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24

Posted: 14 years ago

#137

Yes, Ayeshaa's answer is correct

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v3gradev09

@v3gradev09

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Posted: 14 years ago

#138

Originally posted by: -Ayeshaa-
cg and g are the SI Prefixes. cg is 10^-2, and g is 10^0 because it's a base unit.

150cg = g?

1.5 *10^2cg/1 *10^-2g/1cg = 1.5 g.

I think this is right:\ And I got the 1.5 by converting the 150 into scientific notation.

Thank You, I understand it. Scientific Notation helped a lot, and I can also do understand it by doing Dimensional Analysis based on what you did. So, it helped! Thanks ! :)

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596277

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Posted: 14 years ago

#139

9V20 - 3V10/3V2

Sorry my radicals aren't showing up, so I'm using the V symbol. I tried solving this, and I got... 6V10 - V5, but the answer at the back of my book says... 3V10 - V5. Where did the 3 come from?

Edited by -Ayeshaa- - 14 years ago

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akhl

@akhl

Dazzler

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Posted: 14 years ago

#140

Originally posted by: -Ayeshaa-
9V20 - 3V10/3V2

Sorry my radicals aren't showing up, so I'm using the V symbol. I tried solving this, and I got... 6V10 - V5, but the answer at the back of my book says... 3V10 - V5. Where did the 3 come from?

(9V20 - 3V10)/3V2
= (9V20/3V2) - (3V10/3V2)
= 3V10 - V5

Note: That 3 is there because 9/3 = 3. In 9/3, the 9 is the 9 of 9V20 and 3 is the 3 of 3V10

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