2.0947 mL X 2.425 mL 642.98 + 79.239 mL mL 2 78.08 cm X 45. cm cm

Q: Multiply or divide the following measurements. Be sure each answer you enter contains the correct…

A: The rule in multiplication and division is that the answer should have the same number of…

Q: Measure the diameter of the circle using Ruler A and Ruler B.Given that the actual diameter of the…

A: Given : Ruler A and Ruler B and some statements are given .  To find : To match the statements…

Q: The density of air at ordinary atmospheric pressure and 25 oC is 1.19 g/L. What is the mass, in kg,…

A:

Q: A chemistry student needs 45.0 mL of diethmylamine for an experiment. By consulting  the CRC…

A: Given,Volume of diethylamine = 45.0 mL = 45.0 cm3         (1mL = 1cm3)Density of diethylamine =…

Q: Multiply or divide the following measurements. Be sure each answer you enter contains the correct…

A: Rule of significant digit-1) In non decimal number, 0 comes after non-zero not count in significant…

Q: A chemist determined by measurements that 0.050 moles of iron participated in a chemical reaction.…

A:

Q: 0.93 cm x 4.925 cm 358.62 g 64.52 mL 93. g mI 1 = X 93. mL = cm 0 mL 5.0 g

A: The expressions given are:

Q: Perform the following calculation and input the answer expressed to the correct number of…

A: Non zero digits are always significant.

Q: Perform this calculation by first converting the numbers into scientific notation and then…

A: According to significant figures' rule, there should be no digits in the answer if we multiply one…

Q: Multiply or divide the following measurements. Be sure each answer you enter contains the  correct…

A: The objective of the question is to divide 782.8 mol by 0.29 L and ensure that the answer contains…

Q: A chemistry student needs 90.0 g of carbon tetrachloride for an experiment. By consulting the CRC…

A:

Q: Multiply or divide the following measurements. Be sure each answer you enter contains the correct…

A:

Q: Multiply or divide the following measurements. Be sure each answer you enter contains the correct…

A:

Q: perform the following calculation, reporting your answer to the correct number of significant…

A: Significant figures of a number are  necessary to indicate the quantity of something. It is also…

Q: Calculate the mass of iron(III) oxide (Fe₂O3) that contains a million (1.0 × 106) oxygen atoms. Be…

A:

Q: A physical chemist measures the temperature T inside a vacuum chamber. Here is the result. T=-21.8…

A: Given, Temperature, T = -21.8 °C The temperature value in S.I units is :

Q: A moderate fever for an otherwise healthy adult is 100. °F. Convert this temperature to degrees…

A:

Q: A chemistry student needs 65.0 mL of diethylamine for an experiment. By consulting the CRC Handbook…

A: The relation between mass and volume is given by: Density = mass / volume so, mass = density x…

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: Ammonia chemically reacts with oxygen gas to produce nitric oxide and water. What mass of ammonia is…

A: Moles of oxygen can be calculated as:

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: Activity Take: Question - Calculating the Density of a Solid Copper forms a face-centered cubic…

A:

Q: Convert 70.2 miles/hour to m/s

A: In unit conversion one unit is changed to another unit by multiplicative conversion factor .

Q: A 1995 penny having a mass of 2.931 g is cut to expose the zinc and dropped into sulfuric acid.…

A: The mass of the given penny is = 2.931 g The mass of the copper shell is = 0.059 g The mass of zinc…

Q: The dimensions of a rectangular object were obtained as shown below. Use the data to determine the…

A: Area of a rectangle with length (a) and width (b) =ab  The least number of significant figures in…

Q: Carry out the following conversions. Report your answers to the correct number of significant…

A: (G)• convert 31.8 Pounds to Grams :-To convert 31.8 Pounds to Grams you have to multiply 31.8 by…

Q: Change the following measurement to the appropriate SI unit. The final unit required is shown to the…

A: The given measurements are converted to appropriate SI units in step two.

Q: Multiply or divide the following measurements. Be sure each answer you enter contains the correct…

A: -> In addition and subtraction answer contains the lowest number of decimal places.-> In…

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.