The answer was 25
Do according to bodmas rule
Answer:
8.759×10-11
Explanation:
it may be to sure try to convert the answer
<span>1. Calculate the mass of the formula unit (fu). Na= 22.990 g/mol Cl= 35.453 g/mol so total = 22.990 g/mol + 35.453 g/mol = 58.443 g/mol
1 mol = 6.02 x10^23 formula units, so (58.443 g/mol)*(1 mol/6.02x10^23 fu)= 9.7x10^-23
2. Convert mass to grams: (0.17 mg)*(1 g/1000 mg) = 0.00017 g
3. Calculate number of formula units: 0.00017 g x (1 fu/9.7x10^-23 g) = 1.8x10^18
Or more simply:
(.00017 g) * (1 mol/58.443 g) * (6.02x10^23 fu/1mol) = 1.8x10^18</span>
1 calorie is needed to raise 1 g of water 1 °C.
350 * 22 = 7700 calories
7,000 is 100 times larger than 70
Plz mark as brainliest. I rlly need it ;-;
