1. A cylinder of a compressed gas has a volume of 85 dm3 and a pressure of 984 kPa. What volume would the gas occupy if allowed to escape into a balloon at a pressure of 125 kPa? Asume that temperature does not change. 2. At 0 °C and 5 atm, a given sample of a gas occupies 75 L. The gas is compressed to a final volume of 30 Lat 0 °C. What is the final pressure?

Q: You and some friends plan a road trip across country. The total distance is 2105 miles. Your car…

A: Total distance is = 2105 miles The car travel in a gallon is = 33 miles/gallon The cost of fuel is =…

Q: 23mg Drug/kg Person into grams for an 182 lb person

A: Answer:- This question is answered by using the simple concept of dimensional analysis using the…

Q: 56. Round the number on the left to the number of significant figures indicated by the example in…

A: Significant figures of a number are those which are absolutely necessary to explain the numbers…

Q: (4.8 x 10-14 ) (2.0 x 109) in scientific notation

A: (4.8 x 10-14 ) (2.0 x 109) in scientific notation

Q: Convert 83 cm into meters

A: Convert the cm to m We know that1.0 m = 100 cmnow the coversion of cm to m is as shon in figure

Q: 5 - Which of the following numbers are not rounded correctly to 3 significant numbers O a) 1367 >>>…

A: Significant digits are those numbers which are important to used during mathematical operations.…

Q: A patient’s temperature is found to be 38.58C. To whatFahrenheit temperature does this correspond?

A: The temperature of any body is its physical property which tells how hot or cold a body is. As the…

Q: Calculate the kinetic energy of a 35.g bullet moving at a speed of 213.ms.

A: Given :-  Mass of bullet = 35 g  Speed of bullet = 213 m/s  To calculate :- kinetic energy of bullet

Q: A chemistry student needs 55.0 mL of methyl acetate for an experiment. By consulting the CRC…

A: Density of methyl acetate = 0.934 g.cm-3Note: 1 mL = 1 cm3Volume of methyl acetate = 55.0 mL = 55.0…

Q: (1.00866 – 1.00716) d. 6.02205 x 1023 9.875 x 102 – 9.803 x 10? x 100 = |(100 is exact) 9.875 x 102…

A: According to the rule for significant digits in addition and subtraction, the number of significant…

Q: 113. mL of two different liquids are poured into uncovered identical beakers and let stand for 10…

A: Given us two liquid in uncovered beaker kept for 10 minutesdifference between liquid A and liquid B=…

Q: What is a correct graduated cylinder reading from the image below? (do not include the units) -30…

A: Graduated cylinder is a useful apparatus in chemistry lab for the measuring of the volume of…

Q: an empty plastic beaker has a mass of 15.657g. when filled with 10.00 ml of water, the beaker and…

A: Given Mass of beaker= 15.657 g Total mass = 25.789 g Volume of water= 10 ml

Q: The number 31.00065 rounded to 4 significant figures is

A:

Q: How does an element differ from a compound? How are they similar?

A:

Q: 95. Calculate the volume of a rectangular box with the dimensions 42.6 cm by 4.41 cm by 1.932 cm.…

A: Given data, Dimensions of rectangular box= 42.6cm, 4.41cm, 1.932cm.  Density of mercury = 13.63 g/mL

Q: How do I determine which value is the most precise and which value is the most accurate when given 4…

A: In chemistry, there are many ways to check the deviation of experimental data from the accurate…

Q: So will it be 5.31 x 10 0

A: Yes we can write 5.31 as :                           = 5.31× 100

Q: if a measurement is taken every 0.00005s, how many measurements occur in 1s?

A:

Q: The speed of light is 3 x 108 m/sec Assume: 1.6 km/mile 1.If the earth is close to Mars, we are…

A: Distance = speed x time  Distance travelled by electromagnetic radiation = speed of light…

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: A 1.50 cm3 sample of metal is found to weigh 7.08 g. Calculate the density of the metal in units of…

A: We know that, density is defined as the mass per unit volume, i.e.

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: 4.31666666667   What are the significant figures?

A: Significant figures - Total number of digits in a number including the last digit whose number is…

Q: To the correct number of significant figures calculate log(4.399x104).

A: Significant figures are the digits of a number that have meaning in terms of accuracy or precision.

Q: A liquid has a volume of 10.95 mL and a mass of 75g. Calculate the density of the liquid. If 10.00…

A:

Q: 3.67 X 2.3=  4.2 X 5= 6.3 X 2.4= 4 X 1.2= 12.5 X 4.7=

A:

Q: Given a distance is 745 micrometers. Which of the following expresses that distance in meters?…

A: Distance is measured in meters (m) and centimetres (cm)  Short distances are generally expressed in…

Q: 8 - Which of the following numbers are not rounded correctly to 3 significant numbers ? a) 1.5587…

A: There are different numbers , that can be rounded to 3 significant Numbers as -  (1) 1.5587 =>…

Q: The surface temperature on Venus can approach 743 K. What is this temperature in degrees Celsius?…

A:

Q: As a whole number what is 4.13x10-7

A: Given:- 4.13 × 10-7 write whole number -

Q: 20g H2O to molecules= round answer to 2 decimal places

A: First calculate the number of moles for water molecule. Convert that calculated moles to the number…

Q: 5. A rectangular block of an unknown solid has a mass of 441.26 grams and measures 12.00 cm by 3.00…

A: Given, The mass of an unknown solid is 441.26 grams and measures 12.00 cm by 3.00 cm by 1.50 cm.

Q: If I wanted to convert 34.5 meters in to km which of the following conversions factors would I need?

A:

Q: The product of 80.7 m x 5.01 m is _m². Express the answer with the correct number of significant…

A: We know that, while multiplying two numbers , the answer contains the same number of significant…

Q: If you are walking at a speed of 2.5 miles an hour how fast are you moving in kilometers a min.…

A: The speed in kilometers (km) per minutes, it is to be determined. Given: speed = 2.5 miles/hr 1 mile…

Q: Convert 9.65 X 103 cm to standard notation

A: Scientific notation: Scientific notation is a way of expressing numbers in decimal form with…

Q: Numbers which are not the results of measurements are not considered significant figures.   True or…

A:

Q: If l = 3, how many values of ml are possible? --

A:

Q: mass of nitrogen, in kg? x10-26 kg. (Round to two decimal places.)

A:

Q: 2) Calculate the areas of the rectangle and circle in cm2. Report the answers to the correct number…

A: Given : length = 9.90 cm              Width = 3.30 cm              Diameter = 7.50 cm And area of…

Q: I dont quite understand the significant figures. Need some examples

A: Rules for Determination of Significant Figures:[i] All non-zero digits are significant.For example:…

Q: How many seconds are there in 3.7 years? (Use 365 days/year) (You do not need to put in your units &…

A: The given time in the year is = 3.7 years The time in second is =?

Q: The average temperature at the South Pole in June is -37.1 °C. Convert this temperature to degrees…

A: The value is provided according to the questionThe average temperature at the south pole T = -37.1…

Q: You measure the distance between to cities to be 42.0 miles. You need to send this data to Brazil…

A: Convert 42.0 miles to km ?

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.