All categories

4 years ago

THIS iS A Ratio Problem

Chemistry

1 answer:

Arte-miy333 [17]4 years ago

4 0

Answer:

30 moles of CO₂

Explanation:

balanced equation ,

CS₂+3O₂ → CO₂+2SO₂

From equation, 3 moles of O₂ are needed to make 1 mol of CO₂.

This means to produce 1 mol of CO₂, we need 3 moles of O₂, then how many moles of CO₂ will be produced from 90 moles of O₂ ?

Use unitary method to solve such problems,

Number of moles of CO₂ that will be produced:

= $\frac{90 \times 1}{3}$

= $\frac{90}{3}$

= 30 moles of CO₂

You might be interested in

A carbon atom has six protons and six neutrons. What is its<br>atomic number?

diamong [38]

Carbon always has six protons, as its atomic number is six. Carbon twelve would have six neutrons (six protons plus six neutrons) in the nucleus of the atom. So the atomic number is 12

7 0

3 years ago

A 225 g sample of french fries supplies 460 kilocalories of energy. 65% of those calories come from fat, which supplies 9 kiloca

brilliants [131]

The french fries gives 460 kilocalories and <span>65% of those calories come from fat. Then, calorie that comes from fat would be: 65% * 460 kcal= 299 kcal

Fat gives </span>energy about 9kcal/gram. Then, the total mass of fat in the french fries would be: 299 kcal/ (9kcal/g)= 33.22 grams

3 0

4 years ago

Read 2 more answers

When dissolved in water, hydrogen bromide (hbr) forms hydrobromic acid. determine the hydroxide ion concentration in a 4,500 ml

vovikov84 [41]

No of moles of HBr = 3.78g / 80.9 = 0.0467moles
Molarity = Number of moles/ volume. So we have 0.0467 / 4.5 = 0.0103M.
Kw = 1.0 x 10 -14 = [H3O+] [OH-] and [OH-] = 1.0 x 10^(-14) / [H3O+]
So [OH-] = 1.0 * 10^(-14) /1.03 *10^(-2) = 0.9703 * 10^(-12) M

7 0

3 years ago

1. The average temperature in Addis Ababa, during the summer, is about 25°C. What is the equivalent Kelvin temperature?

baherus [9]

Answer:

25 + 273= 298k.

Explanation:

I guess it's correct answer

4 0

3 years ago

An ideal gas in a cylindrical container of radius r and height h is kept at constant pressure p. The bottom of the container is

Juli2301 [7.4K]

Answer:

$m =\frac{p*(pi)*r^{2}*h*mw}{R*\frac{T_{1} + T_{O}}{2}}$

Explanation:

The gas ideal law is

PV= nRT (equation 1)

Where:

P = pressure

R = gas constant

T = temperature

n= moles of substance

V = volume

Working with equation 1 we can get

$n =\frac{PV}{RT}$

The number of moles is mass (m) / molecular weight (mw). Replacing this value in the equation we get.

$\frac{m}{mw} =\frac{PV}{RT}$ or

$m =\frac{P*V*mw}{R*T}$ (equation 2)

The cylindrical container has a constant pressure p

The volume is the volume of a cylinder this is

$V =(pi)*r^{2}*h$

Where:

r = radius

h = height

(pi) = number pi (3.1415)

This cylinder has a radius, r and height, h so the volume is $V =(pi)*r^{2}*h$

Since the temperatures has linear distribution, we can say that the temperature in the cylinder is the average between the temperature in the top and in the bottom of the cylinder. This is:

$T =\frac{T_{1} + T_{O}}{2}$

Replacing these values in the equation 2 we get:

$m =\frac{P*V*mw}{R*T}$ (equation 2)

$m =\frac{p*(pi)*r^{2}*h*mw}{R*\frac{T_{1} + T_{O}}{2}}$

8 0

4 years ago