Answer:
Signals from the A. Nervous system make the skeletal muscles move.
Its air and water. if its multiple choice
Answer:
116 g
Explanation:
From the question given above, the following data were obtained:
Number of mole of calcium = 2.9 moles
Mass of calcium =.?
The mole and mass of a substance are related according to the following formula:
Mole = mass / molar mass
With the above formula, we can obtain the mass of calcium. This can be obtained as follow:
Number of mole of calcium = 2.9 moles
Molar mass of calcium = 40 g/mol
Mass of calcium =.?
Mole = mass / molar mass
2.9 = mass of calcium / 40
Cross multiply
Mass of calcium = 2.9 × 40
Mass of calcium = 116 g
Therefore, the mass of 2.9 moles of calcium is 116 g.
FeCl₂ + 2NH₄OH → Fe(OH)₂ + 2NH₄Cl
Answer:
it can cause irritation in eyes throat and lungs and u can become lightheaded, or possibly fall in a coma
