Answer:
A. The heat needed to raise the temperature of 1 g of a substance 1°C.
Explanation:
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Gravity pulls mass towards its center, therefore as matter is pulled towards a source of gravity it will naturally coalesce into a ball as matter competes to head towards the source of gravity.
Answer: A) 67.1 moles
Explanation:
The balanced reaction is :


To calculate the moles, we use the equation:

According to stoichiometry;
2 moles of iron is produced by 3 moles of carbon monoxide
89.3 moles of iron is produced by=
moles of carbon monoxide
2 moles of carbon monoxide is produced by = 1 mole of oxygen
Thus 134 moles of carbon monoxide is produced by =
moles of oxygen
Its atomic radius increases because there is less electron shielding after the sodium loses one e-. Sodium is a nonmetal which means it forms an anion. Anions always increase from their original atomic radius