What volume of hydrogen gas is produced at STP as sulfuric acid reacts with 120 g of solid metallic calcium in a single replacement reaction?

a. 67.2 liters

b. 65.2 liters

c. 68 liters

d. 66

you open a can of soda room temperature and here hiss. which of the following factors has changed inside the container

Two boxes are 8 cm apart. Which of the following should Janet do to decrease the gravitational force between the boxes? 1: Place the boxes 4cm apart. 2: Place the boxes 10 cm apart. 3: Increase the mass of both boxes.

How to make science project on magnet

In which of the following phases of matter do molecules have the lowest amount of energy? A. liquid B. gel C. solid D. gas

A vase is said to be solid platinum it is found to displace 18.65 mL of water and has a mass of 157 g what is the density of the vase

Testing a hypothesis is called a

When molten rock undergoes crystallization above ground, what type of rock results? a. intrusive igneous rock b. extrusive igneous rock c. metamorphic rock d. sedimentary rock

A 150ml sample of hydrochloric acid completely reacted with 60.0mL of a 0.100 M NaOH solution. What was the original concentration of the HCl solution

Rearrange in to a quadratic 5.333 = (0.6 + 2p) ² / (0.135 - p)

How hot would a 2.3 L balloon have to get to expand to a volume of 3.0 L? Assume the initial temperature of the balloon is 24 °C, and that the pressure inside the balloon remains constant. A. 3 K B. 42 K C. 128 K D. 390 K