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Sedaia [141]
3 years ago
9

How many moles are in 4.23 x 1024 formula units of NaCl

Mathematics
1 answer:
Rashid [163]3 years ago
4 0

Answer:

mol Fe3O4 6.022 x 1023 formula units Fe3O4 = 1.20 x 1024 formula units Fe3O4. 1 mol ... a-How many moles of sodium chloride does the can of salt contain?

Step-by-step explanation:

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Solve for y.<br> y y<br> —— = ——<br> P-9 P+9
Veronika [31]

9514 1404 393

Answer:

  y = 0

Step-by-step explanation:

Subtracting the right side gives ...

  \dfrac{y}{P-9}-\dfrac{y}{P+9}=0\\\\y\left(\dfrac{(P+9)-(P-9)}{P^2-81}\right)=0\\\\y\left(\dfrac{18}{P^2-81}\right)=0\\\\\boxed{y=0}

The factor multiplying y cannot be zero, so y must be zero.

5 0
3 years ago
Randy has 128 ounces if dog food he feeds his dog. 8 ounces of food each day how many days will the dog food last
OverLord2011 [107]
All you have to do is divide the ounces he has into how much he gives the dog each day so 128/8 is 16
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3 years ago
Read 2 more answers
An office supply company sells two types of fax
Phantasy [73]

14 of the machine that cost $150 was sold and 8 of the machine that cost $225 was sold.

To solve this problem, we would write a system of linear equations.

  • Let x represent the machine that cost $150
  • Let y represent the machine that cost $225

We can proceed to write our equations now.

x + y = 22...equation(i)\\150x + 225y = 3900...equation(ii)

From equation 1

x+ y = 22\\x = 22 - y...equation (iii)

<h3>The Value of Y</h3>

put equation (iii) into (ii)

150x + 225y =3900\\x = 22-y\\150(22-y)+225y=3900\\3300-150y+225y=3900\\3300+75y=3900\\75y=3900-3300\\75y=600\\75y/75=600/75\\y=8

<h3>The Value of X</h3>

Since we know the number of y, we can simply substitute it into equation (i) and solve.

x + y = 22\\x + 8 = 22\\x = 22-8\\x = 14

From the calculations above, 14 of the machine that cost $150 was sold and 8 of the machine that cost $255 was sold.

Learn more about system of equations here;

brainly.com/question/13729904

3 0
3 years ago
Eva and her children went into a restaurant and where they sell
Sever21 [200]

Answer:

5 hotdogs and 2 tacos

Step-by-step explanation:

7 0
3 years ago
Shoshana has 5/6 foot of string. greg has 3/4 as much. shoshana multiplies 5/6 by 3/4 to find out has much greg has who has more
Reptile [31]
Shoshana has more string than greg does.
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3 years ago
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