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chap seven q seven, eight

chap twelve q eleven twelve

Four five six physics chap 12

1. Use substitution to determine which choice is the solution of the following system of equation .

1. Use substitution to determine which choice is the solution of the following system of equations.

1. Solve the following system of equations by using substitution.

1. Use substitution to determine which choice is the solution of the following system of equation.

Sort the system below as either having no solution or infinitely many solutions.

1. Please help me thank you

4) Which diagram shows the relationship between volume and pressure for a gas at constant temperature?

1) The pressure of a sample of helium in a 1.0-L container is 0.857 atm. What is the new pressure it the sample is placed in a 0.5-L container? Assume the temperature is constant.

2)A sample of gas is held in a 10.0-L volume piston at 175 kPa. The temperature is kept constant while the volume is decreased until the pressure is 350 kPa. What is the new volume of the gas?

3)A 10.0-L vessel contains gas A at a pressure of 300.0 torr. A 3.00-L vessel contains gas B at a pressure of 400.0 torr. Gas A is forced into the second vessel. Calculate the resulting pressure in torr. Assume the temperature remains constant.

4)A gas occupies a volume of 1.0 L at 25°C. What volume will the gas occupy at 100°C?

5)A 0.5-L container of nitrogen gas at 18°C is heated under constant pressure to the boiling point of water. What is its new volume?

6)At constant volume, a container of gas at atmospheric pressure is heated from 27°C to 77°C. What is the final pressure?

7)A sample of gas starts at 1.00 atm, 0.00°C, and 30.0 mL. What is the volume if the temperature increases to 27.0°C and the pressure increases to 2.00 atm?

8)A 0.5-L container of nitrogen gas at 18 degrees Celsius is heated under constant pressure to the boiling point of water. What is its new volume?

9. Write an equation for a circle shown.

1. Name 5 words without vowels?

Solve the following system of equations by using substitution.

A student's course grade is based on one midterm that counts as 15% of his final grade, one class project that counts as 15% of his final grade, a set of homework

assignments that counts as 45% of his final grade, and a final exam that counts as 25% of his final grade. His midterm score is 69, his project score is 96, his homework

score is 79, and his final exam score is 74. What is his overall final score? What letter grade did he earn (A, B, C, D, or F)? Assume that a mean of 90 or above is an A, a

mean of at least 80 but less than 90 is a B, and so on.

His overall final score is blank

(Type an integer or a decimal. Do not round.)

His letter grade is blank

I

Do any one know the solution for this problem in this image

Pls answer these five questions!!!!!

Pls answer this question!!!

PLS HELPP!!!!

PLS HELP IMMEDIATELY