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3 years ago

What is the mass of 8.2 moles of C2H6O?

1 answer:

8 0

Element: Carbon
Symbol: C
Atomic weight: 12.0107
Atoms: 2
Mass percent: 52.1429

Element: Hydrogen
Symbol: H
Atomic weight: 1.00794
Atoms: 6
Mass percent: 13.1275

Element: Oxygen
Symbol: O
Atomic weight: 15.9994
Atoms: 1
Mass percent: 34.7296

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Solve the system of equations using any method.<br><br> 2y-4=0<br> X+2y=5

xz_007 [3.2K]

Answer:

the slope is (1, 2) if that's what you're looking for!

Step-by-step explanation:

hope this helps, have a nice day:)

8 0

3 years ago

A car salesman had $65,100 in sales. He earned $1,953 in commission. What percent commission did he earn. Explain your answer.

ahrayia [7]

Answer:

1. The percent commission earned is 3%.

2. The loan period is 3.29 years.

Step-by-step explanation:

1. Salesman has $65,100 in sales. He earned $1,953 in commission.

Let the percent commission earn be x%

Therefore, x% of the sales equals $1,953

$\frac{x}{100} of $65,100 = $1,953$

$\frac{x}{100} * 65100 = 1953\\\frac{65100x}{100} = 1953$

We cross multiply

$\frac{65100x}{100} = 1953\\65100x = 1953 * 100\\65100x = 195300$

Divide both side by the coefficient of 'x' (65100)

$\frac{65100x}{65100} = \frac{195300}{65100} \\x = 3$

Therefore, the percent commission earned is 3%

2. Interest (I) = $299 Principal (P) = $1300 Rate (R) = 7%

The formula for finding interest is given as: $I = \frac{PRT}{100}$

Therefore, substituting into the formula, we have:

$299 = \frac{1300 * 7 * T}{100}$

We are finding the time it takes the loan to earn an interest of $299

$299 = \frac{1300 * 7 * T}{100} \\299 = \frac{9100T}{100}$

We cross-multiply:

$299 * 100 = 9100T\\29900 = 9100T$

Divide both side by the coefficient of T (9100)

$\frac{29900}{9100} = \frac{9100T}{9100}\\T = 3.29$

Therefore, the time taken for the loan to earn such interest is approximately 3.29 years

4 0

4 years ago

Assume that adults have IQ scores that are normally distributed with a mean of and a standard deviation . Find the probability t

Tcecarenko [31]

Answer:

the probability when the IQ is lower than 136 is 0.9641

Step-by-step explanation:

Given that

The mean is 100

The standard deviation is 20

We need to find out the probability when the IQ is lower than 136

So,

z value equivalent to 136 = (136 - 100) ÷ 20 = 1.8

Now

p (z < 1.8) = 0.9641

hence, the probability when the IQ is lower than 136 is 0.9641

3 0

3 years ago

Can anyone help? I really need it

ElenaW [278]

Answer:

Step-by-step explanation:

Both equations should be in slop-intercept form (y=mx+b)

So add -2x to -6. Your equation should look like this

y=2x-6

In y=mx+b

b will fall on y-axis

mx is rise/run

So in the first equation plot -6 on y axis and go up 2 and over 1(because 2x is equivalent to 2/1 x)

In the second equation plot -1 on the y axis. Then go up 1 and over 3 from that point.

4 0

3 years ago

You are given two variables, already declared and assigned values, one of type double, named totalWeight, containing the weight

Alchen [17]

Answer:

double singleWeight = totalWeight/quantity;

Step-by-step explanation:

Considering you already have two different declared and assigned variables, in C language you would have the following lines:

#include <stdio.h>

int main()

{

double totalWeight = 5.2 ;

int quantity = 2;

double singleWeight = totalWeight/quantity;

// Displays operation

printf("%f / %d = %f", totalWeight, quantity, singleWeight);

return 0;

}

It is very important to keep in mind that the type of variable of singleWeight is double due to the expecting number is the result of the division where the dividend is double too.

8 0

3 years ago