Answer:
500 g flour = 600 g
6*1.2 g salt = 7.2 g
12*1.2 g yeast = 14.4 g
30 mL oil = 36 mL
360 mL water = 432 mL
Step-by-step explanation:
10 bread rolls requires 500g of flour.
Eli uses 600g of flour which is 1.2 times the amount needed for 10 bread rolls.
This means that 1.2 * 10 bread rolls are made which is 12 bread rolls.
Multiply the remaining ingredients by 1.2:
500 g flour = 600 g
6*1.2 g salt = 7.2 g
12*1.2 g yeast = 14.4 g
30 mL oil = 36 mL
360 mL water = 432 mL
4.65
13 ÷ 20 is 0.65, just add the 4
<span>1. How much heat is absorbed by a 50g iron skillet when its temperature rises from 10oC to 124oC? Joules
Formula: Heat = mass * specific heat * ΔT
Data:
mass = 50 g = 0.050 kg
specific heat of iron = 450 J/ kg °C
ΔT = 124°C - 10°C ¿ 114 °C
=> heat = 0.050kg * 450 J / kg°C * 114°C ≈ 2.6 J
2. If a refrigerator is a heat pump that follows the first law of
thermodynamics, how much heat was removed from food inside of the
refrigerator if it released 492J of energy to the room? Joules
The firs law of thermodynamics is conservation of energy => energy removed from inside of the refrigerator = energy released to the room
=> Answer = 492 J
3. How much heat is needed to raise the temperature of 45g of water by 63oC? Joules
Formula: heat = mass * specific heat * ΔT
specific heat of water = 4186 J / Kg °C
heat = 0.045 kg * 4186 J/kg °C * 63°C = 11,867.31 J
</span>
Answer:
169,000 people
Step-by-step explanation:
increase from 2010-2015:
168000/100 = 1680 = 1%
1680 x 7 = 11,760 people
population at 2015 = 168000+11760 = 179,760
decrease from 2015-2020:
179760/100 = 1797.6 = 1%
1797.6 x 6 = 10,785.6 people
population at 2020 = 179760-10787.6 = 168,974.4 people
rounded to the nearest 100 = 169,000 people
