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liraira [26]
3 years ago
7

What shows how many molecules there are of a chemical formula? ​

Mathematics
1 answer:
olga nikolaevna [1]3 years ago
5 0

Answer:

no of moles = mass / molar mass

1 mole = 6.02 *10^23 molecules

I don't know if that helped

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Find the amount of each payment to be made into a sinking fund which earns 9​% compounded quarterly and produces ​$43 comma 000
Solnce55 [7]

Answer:

$2647.18

Step-by-step explanation:

Formula : A[\frac{1+(\frac{r}{n})^{n}-1 }{(\frac{r}{n} )}]

Future value = $43,000

r = rate of interest = 9% = 0.09

t = 3.5 years (compounded quarterly)

n = number of compounding (3.5 × 4) = 14

Now put the values into formula :

43000 = A[\frac{1+(\frac{0.09}{4})^{14}-1 }{(\frac{0.09}{4} )}]

43000=A(\frac{(1+0.0225)^{14}-1}{\frac{0.09}{4}})

43000=A(\frac{(1.0225)^{14}-1}{0.0225})

43000=A(\frac{0.365483427}{0.0225})

43,000 = A(16.243708)

A = \frac{43000}{16.243708}

A = $2,647.17883 ≈ $2647.18

5 0
3 years ago
What is the system of equations for 2x + 2y = 10 and 5x - 2y=4?
vagabundo [1.1K]

2x  + 2y = 10 \\ 5x - 2y = 4 \\  7x = 14 \\ x = 2 \\  \\ 2(2) + 2y = 10 \\ 4 + 2y = 10 \\ 2y = 6 \\ y = 3
(2,3)
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2 years ago
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Students were going to a play. The students who paid in advance only had to pay $32, but the students who paid at the door had t
Mnenie [13.5K]

Answer:

64

Step-by-step explanation:

SInce the students at the door had to pay twice as much as the students who payed in advance, you would do 32*2=64

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2 years ago
Please help me , thank you
natka813 [3]

Answer:

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Step-by-step explanation:

one half of the circle makes a straight line and that will equal 180 degrees so 60+45=105

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PLEASE HELP FAST!!! 30 POINTS
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Answer:

40 points

Step-by-step explanation:

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