2A gas that has a volume of 98 liters, a temperature of 45 °C and an unknown pressure has its volume decreased to 34 liters and its temperature decreased to 35 °C. If the pressure after the change is 2.0 atm, what was the original pressure of the gas?

Q: Which has the smallest density? 1.) 1.5 g/mL 2.) 1.5 g/L 3.) 1.5 mg/L 4.) 1.5 g/cm3

A: To compare the given densities first of all we convert the unit of density in g/mL unit.

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

A: Photosynthesis is a chemical reaction in which water (H2O) and carbon dioxide (CO2) chemically react…

Q: The average radius of a molecule of lysozyme an enzyme in tears is 1.430nm. What is its radius in…

A: To solve this we have to convert the radius from nanometer to Kilometer  We know that  1 nm = 10-9 m…

Q: scientific notation of 50.031

A: Scientific notation is a convenient way to express very large or very small numbers. A number which…

Q: 75.5 dg =      write in scientific notation

A: Scientific notation is used to express a number in its decimal form multiplied by power of 10. They…

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: Round 329.2258 to 2 significant digits

A: Significant figures are meaningful digits which are known with certainty. There are certain rules…

Q: 4. Materials: Steel, Brass, Copper, Aluminum, Acrylic, Oak, Nylon, Pine, Poplar, PVC, Triple Beam…

A: Mass is 138 g  Volume is 15.6 cc (as same volume of water will be displaced) So, density = M/V =…

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

A:

Q: 4.67*10^5 nm to meters

A: So, as we know that, 1 nm = 10-9 m 1 fm = 10-15 m 1 pm = 10-12 m 1 Å = 10-10 m 1 um = 10-6 m 1 mm =…

Q: Which subshells (s, p, d, f, or g) can have electrons with the indicated magnetic quantum number…

A:

Q: The product of 6.89/1.3550 will have ____ significant figures.   A)  1   B)  2   C)  3   D)…

A: -> 6.89 / 1.3550

Q: What are the 8 families of elements?

A: Since you have posted multiple questions, we are entitled to answer the first only.

Q: Copper has a density of 4.4 g/cm3.  What is the volume of 6.83 g of copper? The volume of the…

A:

Q: 3. Estimate the volume of the object to the correct number of significant figures: mL 25 20 ML 25 20

A: A graduated cylinder is an apparatus used in a chemical laboratory to measure the desired volume of…

Q: 1) 2.2 lb = ___kg 2) 16 fl oz = __pt 3) 1 tsp = __ml 4) 15 gr = __g 5) 1 oz = __m

A: The following conversions can be carried out as:

Q: Express the number 0.000000462 in scientific notation. A) 4.62 x 10-7 B) 46.2 x 10-7 C) 4.62 x 10²…

A:

Q: 2.5 cm3 to mL

A: Given volume: 2.5 cm3 We have to convert this volume to mL.

Q: LO-1 1. Calcium carbonate, a white solid with a density of 2.71 g/mL, reacts with hydrochloric acid…

A:

Q: Penny sizes are the same before and after 1982. What can you say about the density of pennies before…

A: Penny sizes are the same before and after 1982, the density of pennies should have the same before…

Q: C,H,0 2738 2820 1703 4000 3000 2000 1000

A: IR spectroscopy is an important tool for the determination of the functional group in the compound.…

Q: If you have a pOH of 3.65 the [OH-] would be ____M.   You only need to type the number in the box…

A: of the solution is negative base-10 logarithm of hydroxide ion concentration. …… (1) 3.65…

Q: 6- If the density of an object is 6.30 g/cm2, calculate its density in pound/ft. (Given: 1 ft = 30.5…

A: Density can be calculated by dividing mass with volume.

Q: Geologists discovered the new heart- shaped mineral called Coeurenium. You want to calculate its…

A: In the given question no. 3 we have to calculate the density of Heart - shaped mineral that is…

Q: Question 60 Calculate the volume in cm³ of a metal cylinder that has a density of 8.96 g/ cm3 and a…

A:

Q: e) 248 cm to millimeters

A: We have to predict the value in millimeters.

Q: 1.04km to cm

A: We have to convert 1.04 Km to cm.  First, we have to convert 1.04 Km to meter(m) and then meter(m)…

Q: 4) What volume will a 4.67 g object occupy if its density = 7.86 g/cm³? 5) The density of mercury…

A:

Q: Complete the following train track to convert 80965 centimeters to ft. 1 ft = 12 in     2.54 cm = 1…

A: Consider the given information is as follows; 1 ft = 12 in     2.54 cm = 1 in     5280 ft = 1 mi…

Q: 1. Calculate the volume of ball bearings 1 - 7 and record the result with excess significant figures…

A: Since you have asked multiple questions, we will answer the first one for you. To get the remaining…

Q: The mass of a proton is 1.67 x 10-27 kg. What is the mass of a proton in femtograms? A) 1.67 x…

A: Mass of proton is sum of subatomic particles: protons and neutrons. Subatomic particles are protons,…

Q: Express the quantity 33.2 x 10-min mm. a) 33.2 mm c) 0.332 mm b) 3.32 mm d) 3.32 x 10- mm

A: The meter and millimeter both are units of length. The millimeter is equal to one-thousandth of a…

Q: 1.04 km to cm

A: The conversion of quantity from one unit to another unit is known as unit conversion. During the…

Q: 4) What volume will a 4.67 g object occupy if its density = 7.86 g/cm³? 5) The density of mercury…

A:

Q: Convert 34.0 mm to inches

A:

Q: QUESTION 6 What mass of ethane, C2H6, contains the same number of molecules as 3.00 g of…

A:

Q: Solve each problem, and express the answer in scientific notation.a. (4 × 1 0 2) × (1 × 1 0 8) c. (6…

A: Scientific notation is a systematic way to express very large or very small numbers.

Q: conversion convert 130 feet per second to miles per hour (round to whole m.p.h.)

A: Convert 130 feet per second to miles per hour (round to whole m.p.h.)

Q: Express the answer to the following calculations in proper number of significant figures. 154.29)…

A:

Q: What volume of gold is equal in mass to a piece of copper having a volume of 125 cm3? Use Conversion…

A: Given data :-  Given Volume of copper = 125 cm3 Experimental data :-  Density of copper = 8.96 g/cm3…

Q: A chemist has a block of gold metal (density is 19.3 g/mL). The block weighs 3.10 g. What is the…

A: The density of a substance is defined as a mass of a unit volume of the substance. The density of a…

Q: You may refer to the states of matter when considering the answer to this question. 4 2 5 3 b Some…

A: In thisquestion, we have to select the Processes which are endothermic. To convert one state to…

Q: Convert 3 x 103 cm into ft , express the answer in scientific notation. 2.54 cm = 1 inch., 12…

A:

Q: How do you do these questions? I have 3 problems linked below.

A: Moles of CH4(g) = 995/16 = 62.1875 Moles of H2O(g) = 2530/18 = 140.55 According to balanced reaction…

Q: Which number matches the mass of 25.23 g ________.   2523 μg   0.02523 dg   25230 mg   2.523 kg…

A: 1. 2523 μg- The unit is microgram.2. 0.02523 dg- The unit is decigram.3. 25230 mg- The unit is…

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.