Solve for Unknown Variable

Choose the correct set of variables to solve the following problem: At what temperature would 4.0 moles of hydrogen gas in a 100 liter container exert a pressure of 1.00 atmospheres?

• P = x (unknown), V = 1.0 atm, n = 100 L, R = 8.314 L·kPa/mol·K, T = 4.0 mol

• P = 100 L, V = 4.00 mol, n = x (unknown), R = 0.0821 L·atm/mol·K, T = 1.00 atm

• P = 4.00 mol, V = x (unknown) , n = 1.0 atm, R = 8.314 L·kPa/mol·K, T = 100 K

• P = 1.00 atm, V = 100 L , n = 4.0 mol, R = 0.0821 L·atm/mol·K, T = x (unknown)

Tags

NGSS.HS-PS2-1

• 2 moles

• 4 moles

• 1 mole

• 3 moles

Tags

NGSS.HS-PS1-7

In a titration experiment, if 25 mL of 0.1 M HCl is used to neutralize 50 mL of NaOH, what is the concentration of the NaOH solution?

• 0.05 M

• 0.1 M

• 0.2 M

• 0.15 M

If a car accelerates from rest to a speed of 20 m/s in 5 seconds, what is the acceleration?

• 4 m/s^2

• 5 m/s^2

• 3 m/s^2

• 2 m/s^2

Tags

NGSS.HS-PS2-1

Tags

NGSS.HS-PS2-1

In an experiment, a metal cube is heated and its temperature rises from 25°C to 75°C. If the specific heat capacity is 0.5 J/g°C and the mass is 100 g, what is the heat absorbed?

• 2500 J

• 3000 J

• 2000 J

• 1500 J

Tags

NGSS.HS-PS3-4

Tags

NGSS.HS-PS3-2