A physical chemist measures the temperature T inside a vacuum chamber. Here is the result. T=-21.8 °C Convert T to SI units. Be sure your answer has the correct number of significant digits. OK x10

Q: A chemistry student needs 20.0 g of acetone for an experiment. By consulting the CRC Handbook of…

A: Given mass of acetone is 20 g density of acetone is 0.790 g/cm3  volume of acetone is determined as

Q: A.1.36 × 10% B. 1.36 x 10 Q3. Precision refers to how a measured number is close to A. Other…

A: Precision is a method to check the validity of the measured values of an experiment.

Q: Liquid hexane (CH3(CH2),CH3) will react with gaseous oxygen (02) to produce gaseous carbon dioxide…

A: The balanced reaction between liquid hexane and oxygen gas is:

Q: The volume of a gas was measured to be 32.74 liters. If the density is 1.19 g/L, what is the mass of…

A: Denisty Formula density = mass of a gas/volume of the gas Given values  Mass of the gas =?  Volume…

Q: Green plants use light from the Sun to drive photosynthesis. Photosynthesis is a chemical reaction…

A: In a photosynthesis reaction 6 moles of carbon dioxide react with 6 moles of water molecule to give…

Q: Q1. The correct conversion expression between degrees °C to K is? A. T(K)=t(°C) + 273.15 C. T(K)=…

A: Temperature T in Kelvin (K) is equal to the temperature T in degrees Celsius (°C)  + 273.15.

Q: Calculate (2.075 x 0.585)/(8.42 x 0.0045) Correct the answer by rounding off the number to the…

A: Significant Numbers are those numbers or digits in the given number which are used in mathematical…

Q: a small block of a metal with a mass of 223.1g when submerged in a beaker containing water, the…

A: Mass of metal = 223.1 g Density of metal = 7.41 g/cm3 = 7.41 g/mL

Q: Convert 7.13 × 105 km to units of meters.  _____× 10__ m

A: We know that  1 kilometres = 1000 meter = 103 meter

Q: Lithium is the least dense metal known (density = 0.53 g/cm ). What is the volume occupied by 2.10 x…

A: We know density = M/V Where M = mass of the metal            V = volume of the metal.  And we are…

Q: The Ungoogable scale is related to kelvin by the following equation: TK = Tu + 173 If Tu = 173.50…

A: Temperature in kelvin is related to temperature in some unknown units as shown below: TU = TK + 173…

Q: Near room temperature, the density of ethanol can be expressed using the equation d = (-8.99 x 10 g…

A: The density of a compound can be determined by the ratio between the mass of the compound to the…

Q: 1. Evaluate the following and give the answer in the correct number of significant figures. d. Q = 1…

A:

Q: A jet airplane reaches 768. km/h on a certain flight. How long does it take to cover 323. m? Set the…

A:

Q: Convert (3.706x10^9) feet to zulbars (Zb).  Some conversions: 5280 feet = 1 mile; 1 furlong = 10…

A:

Q: tatic 1. Perform the following operations and express the answers in scientific notation Lo I (5 35…

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: Convert the following measurement. 5.8 x 10 x10 3 3 cm ?

A: The conversions of g and cm to Kg and m is as follows: 1 g = 10-3 Kg1 cm = 10-2m

Q: 1. The surface temperature of the planet Venus is 847°F. What is this temperature in: Kelvin Celsius

A:

Q: Convert 0.85 x 10^-12 km to nm

A: 1km= 10^3 m.0.85 x 10^-12 km is equal to 0.85 x 10^-9 m.

Q: A sheet of aluminum (Al) foil has a total area of 1.000 ft^2 and a mass of 3.806g.  What is the…

A:

Q: The density of silver is 10.5 g/cm³. What is the mass of a silver bar (in gms) that measures 0.1000…

A:

Q: Calculate the slope (m) of the best-fit line using the equation: m=y2-y1/x2-x1. Report the result to…

A: Given : x1 = 3.00 cm3   ,    y1 = 4.500 g              X2 = 10.5 cm3   ,    y2 = 15.500 g

Q: Calculate the volume of diethylamine the student should pour out.

A: Step : 1             Calculate the volume of diethylamine.

Q: The density of iron is 7.87 g/mL. What is the mass of a 4.00 cm × 4.00 cm × cm × 1.00 cm block of…

A: given density = 7.87 g/ml cross section = 4.00 cm × 4.00 cm × 1.00 cm

Q: A chemistry student needs 80.0 g of dimethyl sulfoxide for an experiment. By consulting the CRC…

A:

Q: 1.120 Mercury metal is liquid at normal temperatures but freezes at -38.9°C. What is this…

A: The relationship between oC, oF and K is :

Q: chemistry student needs  85.0mL  of methyl acetate for an experiment. By consulting the CRC…

A: Given data: Volume = 85.0 mL Density = 0.934 g cm-3

Q: Be sure to answer all parts. The volume of a room is 1.20 x 10° dm. What is the volume in m'? | m3…

A: Given, Volume of a room = 1.20 * 108 dm3      Required,                    Volume of the room in m3…

Q: Express the quantity 254,998 m in each unit.a. km                  b. Mm…

A: Given   The given quantity is 254,998 m.

Q: A chemistry student needs 75.0 mL of tetrahydrofuran for an experiment. By consulting the CRC…

A: Density (d) tells us how much mass is present in given volume of solution. It is calculated by…

Q: 33 degrees Celsius is what temperature in Kelvin? O 298 K О 33 к O 273 K 306 K

A: We have given  simple conversion of  temperature in degree celsius to kelvin

Q: When the following operations are solved, considering the significant figures, in which case the…

A: In case of finding the significant numbers in case of addition. We will take the number of…

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: Q1. The correct conversion expression between degrees °C to K is? A. T(K)=t(°C) + 273.15 C. T(K)=…

A: Given,  The combination of formula/name is correct for the compound is:

Q: Each of these numbers is written in exponential form, but not in proper scientific notation. Write…

A:

Q: Convert 15.0 km to feet. (1 km=0.621 miles; 1 miles=5280 fe 24.1 feet 4.92 x 104 feet 4.57 x 103…

A: 1 Km = 0.621 miles1 mile = 5280 ftthen 15 km = ___

Q: A chemist prepares a mixture of ethanol and water at a temperature of 23.0 °C. He measures out 38.5…

A:

Q: Each edge of a 1.0 L cubic container is 10 cm (0.10 m) long. How long is each edge of a 27 L cubic…

A: Given : Two different cubic containers of different volumes are given in the question. let us say…

Q: ethanolamine 1.0 3 cm Next, the chemist measures the volume of the unknown liquid as 0.516 L and the…

A:

Q: Solve the following equations and write the answers in scientific notation. 1.017 x 10³ - 1.013 x…

A:

Q: L f (x) dx

A: Definite Integral always tells us about the area under the curve within given limit.

Q: Add 4.13 x 104 and 7.4 x 10³ Give the answer in the correct format with the correct number of…

A: Rule of addition with significant figure:  When adding measurements with significant figure, the…

Q: Attached question

A: Density: It is the mass of the substance present for unit volume. The SI unit for density is g/cm3.…

Q: Next, the chemist measures the volume of the unknown liquid as 1922. cm' and the mass of the unknown…

A: Density is defined as mass of the substance divided by the volume occupied.

Q: A chemistry student needs 55.0 g of dimethyl sulfoxide for an experiment. By consulting the CRC…

A: Given data: The mass of dimethyl sulfoxide = 55.0. g. The density of dimethyl sulfoxide = 1.10…

Q: The product of 2.35 x 10 and 6.435 x 103 (multiplied together) to the correct number of significant…

A: The given values are - 2.35×105  6.435×10-3   On multiplying above values - Thus, after rounding it…

Q: Which of the following are exact numbers?a. There are 100 cm in 1 m.b. One meter equals 1.094…

A: Which of the following are exact numbers?a. There are 100 cm in 1 m.b. One meter equals 1.094…

Q: Green plants use light from the Sun to drive photosynthesis. Photosynthesis is a chemical reaction…

A:

Q: A Chemistry 20 student uses a thermometer and a hot plate and measures the boiling point of ethyl…

A:

Q: A chemistry student needs 70.0 g of dimethyl sulfoxide for an experiment. By consulting the CRC…

A: Given  Mass of dimethyl sulfoxide = 70 gram   density = 1.10 gram.cm-3 or 1.10 gram/cm3 Volume = ?

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.