Match the following elements necessary for fire with their corresponding descriptions. CHOOSE AN OPTION BELOW Fuel square Oxidizing agent square Heat square Chemical chain reaction square

What is the mass in grams of 540 moles of lithium? 37.5 6.94 $3.25\times 10^{24}$ 1.29 none of the above

According to the lab guide, which changes below will you look for in order to test the hypothesis? Check all that apply. D changes in shape or size D color changes whether changes are easily reversible temperature changes formation of precipitates or gases changes of state (gas, liquid, or solid)

Is the statement below true or false? The most common form of tetanus is cephalic tetanus. True False

What is the freezing point of a solution of 0.5 mol of LiBr in 500 mL of water? $(K^{f}=1.86^{\circ }C/m)$ $-7.44C$ $-3.72C$ $-5.58C$ $-1.86C$

To which of the following variables is change in boiling point directly proportional? molarity of solution molality of solution percent by volume of solution percent (mass/mass) of solution

Based on its location on the periodic table , which metal is likely to be less reactive than rubidium and more reactive than calcium? potassium (K) cesium (Cs) magnesium (Mg) titanium (Ti)

How many neutrons do carbon $-12$ and carbon $-13$ have, respectively? A $6;7$ B $12;13$ C $7;6$ D $13,11$

By definition, how is an inorganic substance different from an organic substance? The inorganic substance is one that does not include both carbon and hydrogen. The inorganic substance consists of atoms of different elements bonded together. The inorganic substance consists of long chains of carbons and hydrogens.

What is the molarity of a solution that contains 6 moles of solute in 2 liters of solution? 7M 6M 3M 12M

The heat of vaporization for water is $540cal/g$ How many kilocalories are needed to change 7 g of liquid water to steam at $100^{\circ }C$ ? Treat the heat of vaporization as exact. $\square $