Jermaine factored several problems as part of his math homework on the difference

A raindrops has a mass of 0.50g. how many moles of water does a raindrop contain

alina1380 [7]

So, here you have to look at the periodic table and see what the molar mass of each molecule composing the water compound $H_2 O$
its two hydrogen atom plus an oxygen molecule, making it about 18g per mol.

That said, looking at the mass, we have to ask ourselves, if a mol of water contains 18g of mass, how many moles do we have in 0.5g of water?
We just do a cross multiplication:
$\frac{(0.5)}{18} =0.027 mol$

7 0

3 years ago

Can anybody tell me how to turn the equations above into slope intercept form so I can graph it?

rjkz [21]

Answer:

First then second answer below

Step-by-step explanation:

-x+y 4

-1/-1=1 x=1 y=1

y/1=1/1+4/1

y=1x+4

-x+7y 21

-1/-1=1

7y/7=1/7+21/7

y=1/7x+3

7 0

2 years ago

Nancy needs at least 1000 gigabytes of storage to take pictures and videos on her upcoming vacation. She

balandron [24]

Answer:

The answer to this question can be defined as follows:

In option 1, She buys 4 memory cards.

In option 2, The cost of memory is $40

Step-by-step explanation:

Given:

Available space is = 105 GB

required space = 1000 GB

256 GB memory cost $10.

Find needed memory:

= 1000 GB - 105 GB

= 895 GB

∴ the available memory is 256 GB.

∵ 256 × 4 = 1024 GB

The total memory she have = 1024 + 105 = 1129 GB

And she needs to buy 4 memory cards.

The cost of the four memory cards is= 4 ×10 = $40.

7 0

3 years ago

Read 2 more answers

PLEASE I NEED THE ANSWER QUICKLY

enot [183]

a. 'x' represents half page advertisement and 'y' represents full page advertisement.

System of equation is given by 42x + 86y = 1192 , x + y =20.

b. Number of full page advertisement Kathryn purchase is equals to 8.

c. Number of half page advertisement Kathryn purchase is equals to 12.

<h3>What is system of equation?</h3>

" System of equation is defined as the finite set of equations for which we find a common solution."

According to the question,

Cost of half page advertisement = $42

Cost of full page advertisement = $86

Number of advertisement Kathryn could purchase = 20

Total budget of Kathryn to purchase advertisement = $1192

'x' represents half page advertisement

'y' represents full page advertisement

As per the situation given system of equation we have,

42x + 86y = 1192 ______(1)

x + y = 20

x = 20 - y _____(2)

Substitute the value of 'x' from system of equation (2) in (1) we get,

$42( 20 -y) +86y =1192\\\\\implies 840 - 42y +86y =1192\\\\\implies 44y = 1192-840\\\\\implies y = \frac{352}{44}\\ \\\implies y =8$

Substitute the value of y in (2) to get 'x' ,

$x=20-8$

= 12

Hence,

a. 'x' represents half page advertisement and 'y' represents full page advertisement.

System of equation is given by 42x + 86y = 1192 , x + y =20.

b. Number of full page advertisement Kathryn purchase is equals to 8.

c. Number of half page advertisement Kathryn purchase is equals to 12.

Learn more about system of equation here

brainly.com/question/13997560

#SPJ3

5 0

2 years ago

Read 2 more answers

Scientific notation of 47300

Reil [10]

4.7 x 10^4
or 5 x 10^4

The scientific notation of 70, 030, 000. To find the scientific notation of this value 
1. We first move the period which separates the whole number from the decimal number which is located after the numbers of the given value.
2. We move it in the very recent order number which is seventy million, seven and zero. 
3. It becomes 7.003
4. Thus we count how many moves we did from the tens to the ten million order place. 
5. 7.003 x 10^7

6 0

3 years ago