The specific heat means the heat absorbed when 1 g of the compound increase 1 ℃. So the specific heat is 41.71/(18.69*17)=0.131 J/(g*k).
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
Answer:
A. carrots look better when given more water
Answer:
Matter cannot be created or destroyed in chemical reactions. This is the law of conservation of mass. In every chemical reaction, the same mass of matter must end up in the products as started in the reactants. Balanced chemical equations show that mass is conserved in chemical reactions.
Explanation:
hope this help :)
It's a highly basic substance.
Good luck! (:
