Answer:
The setup above is used to collect hydrogen gas
This answer would be a blood vessels
Answer:
O B. Convert the 10 g of NaCl to moles of NaCl.
Explanation:
The formula for finding the molality is m=moles of solute/kg of solvent. The solute for this question is NaCl and the solvent is water.
(10g NaCl)(1 mol NaCl/58.44g NaCl)=0.1711 mol NaCl
58.44 is the molar mass of NaCl
m=0.1711 mol NaCl/2 kg H2O
m=0.085557837
Answer: 136 g of 
must be reacted to inflate an air bag to 70.6 L at STP.
Explanation:
Using ideal gas equation:
P= pressure of nitrogen gas = 1 atm (at STP)
V =volume of nitrogen gas = 70.6 L
n = number of moles of nitrogen gas = 1 atm (at STP)
R = gas constant = 0.0821 Latm/Kmol
T = temperature of nitrogen gas = 273 K (at STP)
For the balanced chemical reaction:
3 moles of nitrogen are produced by = 2 moles of
3.14 moles of nitrogen are produced by =
moles of
Mass of = Moles × Molar mass = 2.09 mole × 65 g/mol = 136 g
The magnitude of the heats of vaporization, fusion and sublimation of a substance reflect the intermolecular forces.
What are intermolecular forces?
- “Intermolecular forces” is used to describe the forces of attraction between atoms, molecules, and ions when they are placed close to each other.
- Atoms, molecules, and ions are strongly attracted to one another and move toward one another when intermolecular interactions are strong. These are more frequently encountered in states that are condensed, like liquid or solid.
- Atoms, molecules, or ions do not have a significant attraction to one another and move far apart when intermolecular forces are weak.
Learn more about the intra- and intermolecular forces with the help of the following link:
brainly.com/question/26701678
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