Answer:
it gains energy in a quantized amount
Explanation:
when we describe the energy of a particle as a quantized ,we mean that only certain values of energy are allowed....it can only gain the exact amount of energy needed to reach one of the higher energy levels
hope this helps :)
Answer:
4770 grams of sodium carbonate
Explanation:
The reaction that takes place between sodium carbonate and sulfuric acid is:
- Na₂CO₃ (s) + H₂SO₄ (aq) → Na₂SO₄ (aq) + CO₂(g) + H₂O (l)
First we <u>calculate how many H₂SO₄ moles reacted</u>, using the <em>given concentration and volume of solution</em>:
moles = Molarity * Liters
- moles = 18.0 M * 2.50 L = 45 mol H₂SO₄
Then we <u>convert H₂SO₄ moles into NaCO₂ moles</u>, using the <em>stoichiometric coefficients</em>:
- 45 mol H₂SO₄ * = 45 mol NaCO₂
Finally we <u>convert 45 NaCO₂ moles into grams</u>, using its <em>molar mass</em>:
- 45 mol NaCO₂ * 106 g/mol = 4770 g
Answer: NO2.
You can predict that two atoms with similar electronegativity will form covalent compounds while atoms with pretty different electronegativity will form ionic compounds.
Given that N and O are neighbors on the periodic table, you can predict they have similar electronegativities.
Also you can predict that from the fact that N and O are nonmetals, which also means that they will form covalent compounds.
The other compounds liste are formed by metals and non metals wich is an indication that they will have, at least, some ionic character.
Ergo, N and O will form covalent compounds, in this case NO2.
Answer:
thats nice to know i will send Wile E. Coyote there for his supplys
Explanation:
Answer:
- <em><u>3.30 × 10⁶ kg</u></em>
Explanation:
The form of the pool may be approximated to a reactangular prism with height equal to the average depth of water.
<u>1) Dimensions:</u>
- Length: 44.6 m
- Wide: 27.6 m
- Height: 8.80 ft
<u>2) Volume formula</u>
- V = length × width × height
<u>3) Unit conversions</u>
Convert 8.80 ft to meters:
- 1 ft = 0.3048 m ⇒ 1 = 0.3048 m/ft
- 8.80 ft × 0.3048 m/ft = 2.68 m
<u>4) Volume calculation</u>
Substitute the numbers in the formula:
- V = length × width × height = 44.6 m × 27.6 m × 2.68 m ≈ 3,298.97 m³ ≈ 3,300 m³ (it is rounded to three significant digits)
<u>5) Mass of water:</u>
- Density = mass / volume ⇒ mass = density × mass
- Density of water = 1,000 kg / m³
- mass = 3,300 m³ × 1,000 kg / m³ = 3,300,000 kg
<em><u>6) Scientific notation</u></em>
Choose the correct number of significant figures:
- Since the three given factors have 3 significant figures, the correct number of significant figures of the volume and the mass is 3.
The mass must be expressed as a power of ten. The mantissa contains only the significant digits, and the number before the decimal point can only have one digit 1 through 9.
- 3,300,000 kg = 3.30 × 10⁶ kg