All categories

3 years ago

I NEED HELP PLEASE ASAP!! :) How many molecules are represented by 3CO2?

Chemistry

2 answers:

andriy [413]3 years ago

7 0

9. 3 Carbon and 6 Oxygen

barxatty [35]3 years ago

7 0

we can start by noting that there are three carbon atoms in each C3H8 molecule. thus, three CO2 molecules are formed for every C3H8 molecule consumed.

You might be interested in

Which of the following elements is the least electronegative?

Pepsi [2]

Answer:

Explanation:

gggggggggggggggggggggggggg

8 0

3 years ago

Read 2 more answers

how many liters of radon gas would be in 3.43 moles at standard temperature and pressure (273K and 100 kPa)?

bagirrra123 [75]

Answer:

V = 0.0007678398L

Explanation:

Given parameters:

Number of moles of gas = 3.43moles

Temperature = 273k

pressure = 100kPa = 100000Pa

Unknown:

Volume of gas = ?

Solution

The gas is at standard temperature and pressure, this implies we can use the ideal gas equation to solve for the unknown.

Mathematically, the law is expressed as:

PV = nRT

The unknown here is the Volume, V. We know the other parameters.

P = pressure on the gas

n = number of moles

R = gas constant=0.082

T = temperature

now, we have to make V the subject of the expression:

V = $\frac{nRT}{P}$

V = $\frac{3.43 x 0.082 x 273}{100000}$

V = 0.0007678398L

8 0

3 years ago

What is common about the elements of a period? Select all that apply. They have the same number of electron energy levels. They

Flauer [41]

A period is the horizontal row of elements in the periodic table and they are numbered from one to seven. In the same period, atomic number increases from left to right. Elements in the same period have the same number of electron energy levels and they transition from a metal to noble gas.

8 0

3 years ago

Read 2 more answers

When the ph of a solution is changed from 3 to 4 they hydronium ion concentration of the solution

Rashid [163]

<span>The pH scale is a logarithmic scale. Each change of 1 unit in pH represents a 10-fold change in hydrogen ion concentration. As the pH gets smaller the hydrogen ion concentration gets larger. Since you have gone from pH 5 to pH 3 there is a 100-fold increase in [H+].

For pH = 5; [H+] = antilog 10^-pH = 1.0 x 10^-5 M
For pH = 3; [H+] = antilog 10^-pH = 1.0 x 10^-3 M

(1.0 x 10^-3)/(1.0 x 10^-5) = 1.0 x 10^2 hope this helps</span>

8 0

4 years ago

Read 2 more answers

The diagram shows a simple model of an event that is part of the rock cycle. image Which type of event is most likely occurring

Bezzdna [24]

Answer: D. the hardening of liquid magma that leads to igneous rock

Explanation:

5 0

3 years ago