MATH. Tom bought 15 party hats priced at 3 for $0.65 and 56 noisemakers priced at 7 for $1.25. What was the total cost of the hats and noisemakers, not including tax?

A. $9.75

B. $8.75

C. $10.70

D. $13.25

If Earth had only half as much mass as it currently does, how would this affect the force of gravity between the moon and Earth? A. The force of gravity would remain the same. B. The force of gravity would be half what it currently is. C.

For the reaction represented by the equation cl2 + 2kbr ® 2kcl + br2, calculate the percentage yield if 200. g of chlorine react with excess potassium bromide to produce 410. g of bromine.

Complete the equations showing how 2-phenylethanol (c6h5ch2ch2oh) could be prepared from 2-phenylethanoic acid (c6h5ch2co2h) as the starting material.

what mass of sodium fluoride (FW=42.0 g/mol) must be added to 3.50 x 10^2 mL of water to give a solution with pH = 8.40?

Acid rain is caused by air pollution. true or false

3 A2 + B2 >>> 2 units of product 3 AA + BB >>> 2 products 3 volumes + 1 volume >>> 2 volumes product 3 liters + 1 liter >>> 2 liters product 3 moles A2 + 1 mole B2 >>> 2 moles product Click to get the correct formula for the product of the reaction.

Bismuth-211 decays by emitting an alpha particle.

What is a successful outcome for using a scientific method? develop a theory develop a hypothesis support a hypothesis analyze data

A ping pong ball with a mass of 2.20 grams rolls along a frictionless table with a velocity of 0.850 m/s. what is the momentum of the ping pong ball?1.87 g m/s2.59 g m/s1.59 g m/s3.04 g m/s

Elements have been discovered with up to how many energy levels