Answer:
d
Explanation:
its right to be sydinachiondical
To solve this question, we first need to know the mass of one mole of mercury. This can be done by checking the periodic table.
From the periodic table, we can see that:
molar mass of mercury = 200.59 grams/mole.
From the measurements, the chemist found that the participated amount of mercury is 0.02 moles.
We can simply determine the mass of 0.02 moles by doing cross multiplication as follows:
mass of 0.02 moles = (0.02 x 200.59) / 1 = 4.0118 grams
Rounding the answer to 2 significant digits, we get:
mass of 0.02 moles = 4.01 grams
The correct answer is 1.6 × 10¹⁰ .
The volume of ice chunk can be calculated by using the formula length × breadth × height
The length of the ice chunk given is 98 m, the breadth of the ice chunk given is 25 m and the thickness of the ice chunk given is 750 m,
= 98 × 25 × 750 × 0.000189
= 347.9 m³
= 3.831 × 10¹⁴ gal
Water in swimming pool is 24000 gal
Therefore, number of pools that can be filled = 3.831 × 10¹⁴ / 24000
= 1.596 × 10¹⁰
= 1.6 × 10¹⁰
Answer:
Yes!
Explanation:
4Al + 3O2 -> 2Al2O3
4 Al's on the left side
6 O's on the left side
4 Al's on the right side
6 O's on the left side
This is balanced! Let me know if you need help with any other equations.