Internal means inside and external means outside
Answer:
It sends an alarm to the building and saying there is a fire somewhere in the building.
Answer:
Explanation:
Assume the chemical equation:
- Zn(s) + 2HCl(aq) → ZnCl₂(aq) + H₂(g)
<u>1. Convert 112 liters of hydrogen gas at STP to number of moles.</u>
You can use the molar volume of a gas at STP equal to approximately 22.4 liters.
<u>2. Use the theoretical mole ratio</u>
From the balanced chemical equation, 1 mol of Zn produced 1 mol of H₂(g).
Thus, the mole ratio is 1 : 1, and 5 moles of Zn are needed to produce 5 moles of H₂(g).
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<u>3. Convert 5 moles of Zn to mass in grams</u>
- mass in grams = number of moles × atomic mass
- mass = 5 mol × 65.39g/mol = 326.95 g
Round to 3 significant figures: 327g
Answer:
Leroy Jeakins
Explanation:
Catus jack f me in the asss
the device that measures air pressure is called a barometer.
hope that helps :)✨