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1 year ago

Calculate the average time it took the car to travel 0.25 What is the average time it took the car to travel 0.25

Chemistry

2 answers:

DedPeter [7]1 year ago

8 1

Answer:

Explanation:

idk why all u guys like trump who do.. hes just a big pain in the a*s.

Guest

1 year ago

shut the f*ck up this is for work not your bullsh*t

Guest

1 year ago

biden is a f*cking dumb b*tch im only a child and i can run a country better than his old slow 2 mph walking a*s

yawa3891 [41]1 year ago

4 0

Answer:

2.23 3.13

Explanation:

just did it

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Suppose, in an experiment to determine the amount of sodium hypochlorite in bleach, you titrated a 26.34 mL sample of 0.0100 M K

Dmitry [639]

Answer:

0.1 M

Explanation:

The overall balanced reaction equation for the process is;

IO3^- (aq)+ 6H^+(aq) + 6S2O3^2-(aq) → I-(aq) + 3S4O6^2-(aq) + 3H2O(l)

Generally, we must note that;

1 mol of IO3^- require 6 moles of S2O3^2-

Thus;

n (iodate) = n(thiosulfate)/6

C(iodate) x V(iodate) = C(thiosulfate) x V(thiosulfate)/6

Concentration of iodate C(iodate)= 0.0100 M

Volume of iodate= V(iodate)= 26.34 ml

Concentration of thiosulphate= C(thiosulfate)= the unknown

Volume of thiosulphate=V(thiosulfate)= 15.51 ml

Hence;

C(iodate) x V(iodate) × 6/V(thiosulfate) = C(thiosulfate)

0.0100 M × 26.34 ml × 6/15.51 ml = 0.1 M

5 0

2 years ago

Which statement is true about molarity and percent by mass?

Triss [41]

Answer : The correct option is, They are different units of concentration.

Explanation :

Molarity : It is defined as the number of moles of solute present in one liter of solution.

Formula of molarity :

$\text{Molarity}=\frac{\text{Moles of solute}}{\text{Volume of solution in liters}}$

Mass percent : It is defined as the mass of solute present in the mass of solution.

Formula of mass percent :

$\text{Mass percent}=\frac{\text{Mass of solute}}{\text{Mass of solution}}\times 100$

Hence, both are the different unit of concentration.

5 0

2 years ago

Read 2 more answers

A compound that contains only carbon, hydrogen, and oxygen is 48.64% C and 8.16% H by mass. What is the empirical formula of thi

TiliK225 [7]

Answer:

The empirical formula of this substance is:

$C_3H_6O_2$

Explanation:

To find the empirical formula of this substance we need the molecular weight of the elements Carbon, Hydrogen and Oxygen, we can find this information in the periodic table:

- C: 12.01 g/mol

- H: 1.00 g/mol

- O: 15.99 g/mol

With the information in this exercise we can suppose in 100 g of the substance we have:

C: 48.64 g

H: 8.16 g

O: 43.2 g (100 g - 48.64g - 8.16g= 43.2 g)

Now, we need to divide these grams by the molecular weight:

$C=\frac{48.64g}{12.01 g/mol} =4.05 mol\\H=\frac{8.16g}{1.00g/mol}= 8.16 mol\\O=\frac{43.2g}{15.99 g/mol} = 2.70 mol$

We need to divide these results by the minor result, in this case O=2.70 mol

$C=\frac{4.05mol}{2.70mol}= 1.5\\H= \frac{8.16mol}{2.70 mol} = 3.02 \\O=\frac{2.70mol}{2.70mol} = 1$

We need to find integer numbers to find the empirical formula, for this reason we multiply by 2:

$C= 1.5*2=3\\H= 3.02*2= 6.04 \\O= 1*2=2$

This numbers are very close to integer numbers, so we can find the empirical formula as subscripts in the chemical formula:

$C_3H_6O_2$

6 0

1 year ago

The U.S. Mint produces a dollar coin called the American Silver Eagle that is made of nearly pure silver. This coin has a diamet

Rudik [331]

Answer:

The value of the silver in the coin is 35.3 $

Explanation:

First of all, let's calculate the volume of the coin.

2π . r² . thickness = volume

r = diameter/2

r = 41 mm/2 = 20.5 mm

2 . π . (20.5 mm)² . 2.5 mm = 6601 mm³

Now, this is the volume of the coin, so we must find out how many grams are on it.

6601 mm³ / 1000 = 6.60 cm³

Let's apply density.

D = Mass / volume

10.5 g/cm³ = mass /6.60 cm³

10.5 g/cm³ . 6.60 cm³ = mass

69.3 g = mass

Each gram has a cost of 0.51$

69.3 g . 0.51$ = 35.3 $

7 0

1 year ago

A fox spots a rabbit in a field. The fox begins to chase the rabbit, and the rabbit runs away. Which statement best describes th

Ira Lisetskai [31]

Answer:

2 I Think

Explanation:

8 0

2 years ago

Read 2 more answers