"Rate" is related to: <br> volume <br> time <br> distance <br> percentage

A cylinder with a movable piston contains 2.00 g of helium, He, at room temperature. More helium was added to the cylinder and t

aliya0001 [1]

Hey There!

Ideal gas equation: PV = nRT where P is pressure, V is volume, n is moles of gas, R is molar gas constant and T is temperature.

Since P, R and T are constant, V/n = constant

V1 = 2.00 L, V2 = 3.30 L

n1 = (2.00 g)/(4.00 g/mol) = 0.5 mol, n2 = ?

V1/n1 = V2/n2

2.00/0.5 = 3.30/n2

n2 = 0.825 mol

Moles of He added = n2 - n1

= 0.825 - 0.5 = 0.325 mol

Mass of He added = moles x atomic mass

= 0.325 * 4.00 = 1.30 g of He

5 0

3 years ago

Nuclear forces exists because the particles in the nucleus are ?

zloy xaker [14]

Explanation:

Nuclear forces exist because the particles in the nucleus are close together the tritium atom consists of one proton, two neutron, and one electron how many isotopes of hydrogen are known 3 The hydrogen isotope with the least mass is named protium

8 0

3 years ago

What type of isotope undergoes radioactive decay?

jeka57 [31]

Answer:

i think the answer is a

Explanation:

5 0

3 years ago

Read 2 more answers

Warm air rises at the equator and cold air sinks at the poles creating

andrey2020 [161]

Answer:

c.convention currents

Explanation:

As hot air cools it sinks back to the surface of the earth, where it gets warmed by the ocean only to rise again.This is called a convection current.

7 0

3 years ago

How many grams are in 3.93 x 10^24 molecules of CCl4?

Lorico [155]

<h3>Answer:</h3>

1000 g CCl₄

<h3>General Formulas and Concepts:</h3>

<u>Math</u>

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

<u>Chemistry</u>

<u>Atomic Structure</u>

Reading a Periodic Table
Using Dimensional Analysis
Avogadro's Number - 6.022 × 10²³ atoms, molecules, formula units, etc.

<h3>Explanation:</h3>

<u>Step 1: Define</u>

3.93 × 10²⁴ molecules CCl₄

<u>Step 2: Identify Conversions</u>

Avogadro's Number

Molar Mass of C - 12.01 g/mol

Molar Mass of Cl - 35.45 g/mol

Molar Mass of CCl₄ - 12.01 + 4(35.45) = 153.81 g/mol

<u>Step 3: Convert</u>

Set up: $\displaystyle 3.93 \cdot 10^{24} \ molecules \ CCl_4(\frac{1 \ mol CCl_4}{6.022 \cdot 10^{23} \ molecules \ CCl_4})(\frac{153.81 \ g \ CCl_4}{1 \ mol \ CCl_4})$
Multiply: $\displaystyle 1003.77 \ g \ CCl_4$

<u>Step 4: Check</u>

<em>Follow sig fig rules and round. We are given 3 sig figs.</em>

1003.77 g CCl₄ ≈ 1000 g CCl₄

8 0

3 years ago

"Rate" is related to: volume time distance percentage