<span>Friction creates heat which in turn can lead to deviations from the original size and shape of a part.
</span>
The correct answer is D) Ar
71.8 g of iron (III) oxide (Fe₂O₃) were produced from 3 moles of magnesium oxide (MgO).
Explanation:
We have the following chemical reaction:
2 FeCl₃ + 3 MgO → Fe₂O₃ + 3 MgCl₂
We see from the chemical reaction that 3 moles of magnesium oxide (MgO) will produce 1 mole of iron (III) oxide (Fe₂O₃).
number of moles = mass / molar weight
mass = number of moles × molar weight
mass of Fe₂O₃ = 1 × 71.8 = 71.8 g
Learn more about:
number of moles
brainly.com/question/13981579
#learnwithBrainly
Deuterium also called heavy hydrogen, isotope of hydrogen with a nucleus consisting of one proton and one neutron, which is double the mass of the nucleus of ordinary hydrogen (one proton).
The deuterium atom is widely used in prototype fusion reactors.
Answer:
c. Polystyrene
Explanation:
Caleb wants a synthetic material that is not soluble in water, so it must be a nonpolar material because water is polar.
Cellulose is a nonpolar molecular, but is a natural product;
Nylon is a synthetic compound, but is polar, so it' soluble in water;
Vulcanized rubber is polar and the rubber is a natural compound.
The only compound that he can use is polystyrene, which is insoluble in water and is a synthetic material.
