If 4520 kJ of heat is needed to boil a sample of water, what is the mass of the sample of water (ΔHvaporiztion = 2260kJ/kg) ?

Which statement accurately compares ionic and covalent bonding?

A 4.82L balloon filled with gas is warmed from 243.1K to 300.1 K. What is the volume of the gas after it is heated?

Indicate how many significant figures in the following number 1.080

What is mechanical weathering? How do water, ice, wind, and organisms cause mechanical weathering? How can organisms and wind cause it? Type out an explanation of why that answer is correct

Gold ions occur in seawater to the extent of1.0. So far no one has profitably extracted goldfrom this source. What is this concentration in ions/cm3?

When does a cold front develop? when a cold air mass invades a warm air mass when two masses of warm air meet when two masses of cold air meet when a warm air mass invades a cold air mass

How does gravity affect the moon? A) it pulls the moon toward earth B) it pushes the moon away from earth C) it allows the moon to move in a straight line D) it keeps the moon from colliding with the sun

Sulphur saturated solution

Referring only to the periodic table, tell: a). How the electron configurations of fluorine (F) and chlorine (Cl) are similar? b). How are they different? c).

How do decantation and filtration differ which should be faster