How much heat is needed to melt 45.00 g of ice at 0°C if the latent heat of fusion of water is 333.7 J/g? 288.7 J 378.7 J 14,220 J 15,020 J

The balanced equation below shows the products that are formed when pentane (C5H12) is combusted. C5H12 + 802 → 10CO2 + 6H20 What is the mole ratio of oxygen to pentane?

Calcite is created by combining: a. calcium, carbon, and nitrogen c. calcium, oxygen, and nitrogen b. calcium, carbon, and oxygen d. calcium, oxygen, and hydrogen

Which type of pollution includes CFCs and smog?

Which statement best explains why the overall charge on an atom is zero? a. The positive charge of the neutrons in the nucleus equals the negative charge in the electron cloud. b.

If you are on a field trip to the ocean and you recovered 750 grams of ocean salts from a sample of ocean water, based on known percentages of dissolved solids in ocean water, what would be the mass of sodium in the sample? A. 24.51 g B. 0.041 g C.

Lithium, beryllium, and boron are elements with atomic number 3, 4, and 5, respectively. Even though they are three of the five simplest elements, why are they rare compared to many heavier elements?

What is the formula equation for: Copper (II) Sulfate Pentahydrate - > Copper (II) Sulfate + Water?

what combination will result in a acidic solution? a reaction of strong acid and strong base b reaction of strong acid and weak base c a reaction of weak acid and strong base d reaction of weak acid and weak base

How many moles of sucrose (C12 H12 O11) would be in 7.1 liters of a 0.93 molarity solution of sucrose?

If the temperature is constant what change in volume would cause the pressure of an enclosed gas to increase by a factor of 4