Answer is 0.10 mol.
<em>Explanation;</em>
n = m/M
Where n is number of moles (mol), m is the mass of substance (g) and M is the molar mass of the substance (g/mol).
n = ?
m = 0.40 g
M = 4.0 g/mol
From substitution,
n = 0.40 g /4.0 g/mol
n = 0.10 mol
Hence, the balloon has 0.10 mol of He.
Answer:
heat transfer is when you transfer heat from one thing to another and heat transformation is when heat is transforming into something else hope it helps
Explanation:
The predator hunts the prey. The predator needs the prey to survive because this is the predator's source of food. The prey needs the predator to help reduce population, this is because when the population of prey grows too large more resources need to be consumed. If the prey start dying the predators lose their food source. If the predators start dying the prey's population will become so high that it depletes their resources, such as food.
Answer:directly to the right
Explanation:
Atomic size increases from left to right
When the temperature of an object is hot, the object tends to expand
