This is an application of Boyle's law:
P₁V₁ = P₂V₂. we don't have to convert volume and pressure to standard forms. we can even use the pressure with mmHg
1 atm = 760 mmHg
V₂ = P₁V₁ / P₂ = 745 x 500 / 760 = 490 ml
Note that here we assume constant temperature
Answer:
Coefficient of
in the balanced equation with smallest possible integer is 6.
Explanation:
Unbalanced equation: 
Balance Ca: 
Balance
: 
Balance H and O: 
Balanced equation: 
So coefficient of
in the balanced equation with smallest possible integer is 6.
<h3>
Answer:</h3>
Ammeter
<h3>
Explanation:</h3>
- Lets ask ourselves the following questions
What is an Ammeter?
- An ammeter is a device that is used to measure electric current in a circuit.
How is it used ?
- To measure the electric current the ammeter is placed in series with the components of the circuit and the reading on the ammeter is taken.
What is electric current?
- Electric current is a measure of the flow of electrons in a given circuit per unit time. It is therefore, the measure of the rate of flow of electrons in a circuit.
<h3>
Answer:</h3>
4.2 × 10⁻²¹ moles Sn
<h3>
General Formulas and Concepts:</h3>
<u>Math</u>
<u>Pre-Algebra</u>
Order of Operations: BPEMDAS
- Brackets
- Parenthesis
- Exponents
- Multiplication
- Division
- Addition
- Subtraction
<u>Chemistry</u>
<u>Atomic Structure</u>
- Using Dimensional Analysis
- Avogadro's Number - 6.022 × 10²³ atoms, molecules, formula units, etc.
<h3>
Explanation:</h3>
<u>Step 1: Define</u>
2500 atoms Sn
<u>Step 2: Identify Conversions</u>
Avogadro's Number
<u>Step 3: Convert</u>
- Set up:

- Multiply:

<u>Step 4: Check</u>
<em>Follow sig fig rules and round. We are given 2 sig figs.</em>
4.15144 × 10⁻²¹ moles Sn ≈ 4.2 × 10⁻²¹ moles Sn
Hello there!
When you burn the wood, some of the mass will go off as smoke. So, in a closed environment, the total mass of the area will stay the same, but the wood's mass will not.
I hope this helps!
Brady