Answer:
9.62 × 10² J
Explanation:
In this problem, we need to convert 230 calories to joules. For this, we must know the conversion from calories to joules.
1 Calorie = 4.184 Joules
To find Joules in 230 calories, multiply 4.184 by 23. So,
230 Calorie = (230 × 4.184) Joules
= 962.32 Joules
or
230 Calories = 9.62 × 10² J
So, the correct option is (A).
Answer:
Six Steps to Control Workplace Hazards
Step 1: Design or re-organise to eliminate hazards. ...
Step 2: Substitute the hazard with something safer. ...
Step 3: Isolate the hazard from people. ...
Step 4: Use engineering controls. ...
Step 5: Use administrative controls. ...
Step 6: Use Personal Protective Equipment (PPE)
Explanation:
i it true?
Answer:
1134
Explanation:
(the ones place was rounded up). 1133.981 is the unrounded answer.
Answer: The formula of the hydrated alumina is
Explanation:
Decomposition of hydrated alumina is given by:
Molar mass of = 101.96 g/mol
According to stoichiometry:
(101.96+18x) g of decomposes to give 101.96 g of
Thus 5.000 g of
decomposes to give= of H_2O
But it is given 5.000 g of a sample of hydrated salt was found to contain 2.6763 g of unhydrated salt
Thus we can equate the two equations:
Thus the formula of the hydrated alumina is