Answer: nn
Explanation:
The nanometre (international spelling as used by the International Bureau of Weights and Measures; SI symbol: nm) or nanometer (US spelling) is a unit of length in the metric system, equal to one billionth (short scale) of a metre (0.000000001 m).
Answer:
Explanation:
Using the Ideal Gas Law we have and the number of moles n could be expressed as , where m is the mass and M is the molar mass.
Now, replacing the number of moles in the equation for the ideal gass law:
If we pass the V to divide:
As the density is expressed as , we have:
Solving for the density:
Then we need to convert the units to the S.I.:
Finally we replace the values:
<h3>
Answer:</h3>
1.63 M
<h3>
General Formulas and Concepts:</h3>
<u>Math</u>
<u>Pre-Algebra</u>
Order of Operations: BPEMDAS
- Brackets
- Parenthesis
- Exponents
- Multiplication
- Division
- Addition
- Subtraction
Equality Properties
- Multiplication Property of Equality
- Division Property of Equality
- Addition Property of Equality
- Subtract Property of Equality
<u>Chemistry</u>
<u>Unit 0</u>
- Reading a Periodic Table
- Writing Compounds
<u>Aqueous Solutions</u>
- Molarity = moles of solute / liters of solution
<h3>
Explanation:</h3>
<u>Step 1: Define</u>
1.43 mol NaCl (sodium chloride)
0.875 L solution
<u>Step 2: Find M</u>
- Substitute [M]: x M = 1.43 mol NaCl / 0.875 L
- Divide: x = 1.63429 M
<u>Step 3: Check</u>
<em>Follow sig fig rules and round. We are given 3 sig figs.</em>
1.63429 M ≈ 1.63 M
Answer:
Explanation:
This is a Charles Law problem => V ∝ T => direct proportionality ... that is, increasing temperature => increasing volume and decreasing temperature => decreasing volume. The empirical relationship comparing two sets of conditions is V₁/T₁ = V₂/T₂.
Given
V₁ = 462 ml T₁ = 27°C = 300K
V₂ = ? T₂ = 37°C = 310K
V₂ = V₁(T₂/T₁) = 462ml(310K/300K) = 477ml (3 sig. figs.)
Answer:
3
Explanation:
The first election shell can only hold 2 electrons, but the next one can hold up to 8