3. A sample of gas has a volume of 78.5 mL at 45 "C. What volume will the sample occupy at 0 'C when the pressure is held constant? 4. Under constant pressure condition, a sample of hydrogen gas initially at 85 "C and 7.2 L is cooled until its final volume is 4.1 L. What is its final temperature?

Q: Question 4 Consider this formula. Z = X = Y If z = 4.0 and y = 9.2, what is the value of x? Express…

A:

Q: Perform the indicated math operation, and round off the answer to the correct number of significant…

A: Significant figure calculation rule used in multiplication or division: The number of significant…

Q: 19. You are trading blueberries for cherries. Using an exact relationship of 1 cherry = 4…

A: Given :  1 cherry = 4 blueberries.

Q: Baseball is played with a round ball that may have a circumference of 9.07 in. and a weight of 5.08…

A: Conversion of the given- 9.07 in to cm 5.08 oz to g

Q: Complete the following table. Round each of your answers to 3 significant digits. a corn muffin food…

A: Conversion formulae are:  1 Kcal = 103 cal  1 cal = 4.184 J  1 KJ = 103 J

Q: B. Calculate the following information. USE THE FACTOR-LABEL METHOD TO DO YOUR CALCULATIONS!!! 1. A…

A: The density of a solution is calculated by the formula: Density=MassVolume   Note: Since you have…

Q: 497.7/3.0 significant figures

A: In division, the least significant number will be taken either from the numerator or denominator.

Q: A pycnometer (Figure 1) is a special flask often used for measuring the densities of substances.…

A: The volume of a given liquid is defined as the amount of the space occupied by the liquid that fully…

Q: Express your answer to the appropriate number of significant figures 2.5-1.803 2.5-1.803

A: Significant figures rule for addition and subtraction  From this rule we get that ; The Final…

Q: Express 53.8°C in units of Kelvin. Express your answer to two decimal places.

A: Unit conversion:  The unit of temperature degree can be converted into Kelvin by adding degree value…

Q: Why does 25000 only contain 2 significant figures?

A: Given that a number 25000 25000 only contains two significant figures.

Q: How many inches (in) are in 105 cm? 1 in 2.54 cm 1 cm = 0.01 m 50 in 40.12345 in 105 in 41.3 in

A: Conversion formula used in this question is,1 in = 2.54 cmSignificant rule is that in addition term,…

Q: which balance is more precise one that weight cg or one that weighs mg

A: Centigram(cg): a unit of mass equal to 0.01 of a gram. milligram (mg): a unit of mass equal to 0.001…

Q: If a stufent dropped their copper on the floor,they could carefully pick it up and place it on the…

A: While weighing compounds using balances, it is very important to take care that all sources of error…

Q: significant

A:

Q: Mass (g) Height (cm) Diameter (cm) Cylinder A 15.560 5.11 1.20 Cylinder B 35.536 5.90 1.30 In…

A: Volume can be calculated using the following equation.

Q: What is 2.9 as 3 significant figures?

A:

Q: How much mass will the cube in Figure 1.21 have if a 2-c m 3 cube of the same material has a mass of…

A: The box made up of the same material means their density will be constant. This means the box of…

Q: Perform the following calculation. Round your answer according to the correct number of significant…

A: For multiplication and division the number of significant figure of result will be same as the least…

Q: Which letters on the graph below shows the state of matter with the greatest amount of energy?…

A: Point F ( water vapour/steam) shows the greatest amount of energy.

Q: 8. Do the following calculations. Be sure your answers have the correct number of significant…

A:

Q: Round 0.054321 to 4 significant figures

A: If the last digit in the given number is greater than 5 , then we have to add 1 to second last digit…

Q: An electric current transports 10.0 C of charge in 248. milliseconds. Calculate the size of the…

A:

Q: An unknown piece of metal weighs 526 g and has a volume of195 cm3. Identify the metal and justify…

A: Given mass=526g Volume=195cm3 Density=mass/volume Density =526/195=2.69g/cm3 This metal is aluminium

Q: Consider how cubic inches cubic centimeters and milliliters compare in size to each other how would…

A: Cubic centimeters, milliliters and cubic inches all are units of volume. They are interconvertible.

Q: According to the figure on the right, which ruler would provide a more precise measurement of the…

A: According to the figure on the right, NICK ruler would provide a more precise measurement of the…

Q: Consider 11 g of a certain substance with volume 1.000 dm³ and calculate the volume in cm³ that…

A: The objective of the question is to calculate 1) The specific volume2) DensityIt is given that,The…

Q: Calculate the area of a rectangle in cm² with a width of 6.7 cm and height of 3.0 cm. Be sure to…

A: The significant figure refers to particular digits in a number. According to the measurement rule,…

Q: A 2.26 liter glass bottle is full of oil. Assume it contains 2.26 L of oil.  The density of oil is…

A:

Q: 6. A bicycle has a 56 cm frame. What is this frame size equal to in inches? (1.00 in = 2.54 cm. Note…

A:

Matter and Measurement

In the universe, there is matter, energy, and void space. The universe contains energy and void space. The definition of matter can be considered as something which possesses mass and consumes space. Chemistry is that branch of science which deals with the study of matter. Under chemistry, nature, composition, and the changes occurring to matter are discussed.