a room contains 4.23 x 10^24 molecules of oxygen. what is the mass of oxygen in the room?

Q: What is the physical state in which matter has a specific volume but does not have a specific shape?…

A: We have to predict the correct state of matter.

Q: 2. A balloon has a total mass of 2000 kg. What is the minimum volume of air that it must displace if…

A: Calculation  of minimum volume. Given  2000Kg total  mass Density of air  =1.29/m3

Q: РОН 3D 10.8 1.4 x 104 М NaOH 3.1 х 10% М НСІ [Он] %3 1.1 х 10° М [н]3 2.0 х 10м

A:

Q: The density of ethylene glycol (anti-freeze) is 1114 kg/m3. How much mass (in kilograms) of this…

A:

Q: 2.10x10^23 molecules of water contains how many grams of water?

A:

Q: Convert the following measurement. 3 kg 9.6 x 10 %3D mol · L mol dL

A: Unit conversion: 1000 g=1kg1 L=10 dL (decilitre) We have to calculate following: 9.6×103 gmol.L=_…

Q: International computer communications are often carried by optical fibers incables laid along the…

A: Given, the mass of optical fiber = 1.19 x 103 lb/m            Length of each strands optical fiber…

Q: Lithium is the least dense metallic element. Its density is 0.534 g/mL. What is the mass of lithium…

A: Given : Density = 0.534 g/mL Volume = 1.00 in3 Convert in3 into mL as follows. 1 in3 = 16.3871 mL

Q: 2.004, p. 3.746 + log q. 4.876 + log (,0E) = 4.632 X = '1.005 '2.005

A: The solution is given below -

Q: 1. What is the density of a solid if a sample occupying a volume of 16.53 mL wei 85.4 g? 2. Why does…

A: Given: The mass of the solid is 85.4 g. The volume occupied is 16.53 mL.

Q: Carry out each of the following calculations, paying special attention to significant figures,…

A: Significant figures are the number of digits in a value, often a measurement, that contribute to the…

Q: A brownie contains 1.30 x 102 mg of sodium. What is this mass in units of grams?

A: 1 mg = 10-3 g

Q: the us national institute of standards and technology used mercury gauge as a primary standard for…

A: given, mass of mercury = 225 kilogram = 225000 grams density of mercury = 13.6 g/mL

Q: Differentiate between solids and liquids in terms of the arrangement AND motion of the particles

A: Difference between solids and liquids on the basis of their arrangement and motion of the particles…

Q: What is the mass of a golf ball traveling at 82.0 ms 1? The rest mass of a golf ball is 45.9 g, as…

A:

Q: The particles in a substance are moving and sliding past each other, but they are still in contact.…

A: This question is related to state of matter. Matter exist in three phases: Solid, Liquid and Gas.

Q: What mass of iron in the nail reacted with the water?

A:

Q: The diameter of a DNA alpha helix is about 8 ✕ 10−8 in. What is its diameter in centimeters?

A: Given: Diameter of DNA α helix= 8×10-8 inWe need to find diameter in cm

Q: What is the difference between a chemical process and a physical process in chemistry

A:

Q: 14K yellow gold is an alloy that contains gold, copper and silver. A 14K gold ring contains 6.90g of…

A:

Q: Calculate the volume in in3 of a 5.0 kg bar of copper.

A: The relation between volume and mass is given as: Density = mass/volume So, volume = mass/density…

Q: If that same 225-g sample of water was frozen, what volume would it occupy, given that the density…

A: We have to determine the volume occupied by the 225 grams of the water sample that has been…

Q: What is the standard SI unit for mass?

A: Mass is a measure of the amount of matter in a substance. Mass measures the amount of matter…

Q: 1 mg is the same as O 1/10 cg O 100 cg 1/1000 kg 10 g

A: The symbol, mg is used to express the mass of substance.

Q: the A sample of argon weighing 11.1 g occupies a volume of 15.7 L. What is the new volume if the…

A: [2.]  m1 = 11.1 g  V1 = 15.7 L  V2 = ?  m2 = 22.2 g  Molar mass of Ar = 39.948 g/mol n1 = 11.1 g /…

Q: how many nanomoles is a 83.9 pg sample of platinum?

A: Given :- mass of Pt = 83.9 pg  To calculate :- number of nanomoles of Pt  Number of moles =…

Q: In the combustion of ethanol, 20.50 g of carbon dioxide gas was produced, What is the volume in mL…

A:

Q: approx 1×10

A: The acidic strength of hydrides of halogen increase from down the group because the atomic size or…

Q: What is 393.83 kJ/mol rounded to three significant figures?

A: Based on the significant figures rule, the number to be rounded off is followed by digit zero or…

Q: A chemist weighed out 5.3 g of iron. Calculate the number of moles of iron she weighed out. Be sure…

A: Given : weight of iron = 5.3 gram    Find : Calculated the number of moles of iron .   Formula :…

Q: What is the mass, in grams, of a pure gold cube that has a volume of 5.00 cm3?

A: Answer: mass of pure gold cube is 96.5 g. Given:      Volume of pure gold cube=5.00 cm3      Density…

Q: What is the mass of 1.86x10^24 molecules of nitrogen

A: first find the no. of moles of N2  then find mass by multiply by its molar mass

Q: HUIA (OH]= 1.1 x 10° M [H,O'] = 5.0 x 107 M Milk

A:

Q: 2.3E23 molecules of sugar (CH120,) would weigh how many grams?

A: The moles are the unit of the substance and it is explained as 6.022×1023 atoms/molecules/ions. It…

Q: What is the mass of a golf ball traveling at 71.8 ms1? The rest mass of a golf ball is 45.9 g, as…

A: 45.9 g is the answer

Q: A cylindrical glass tube of length 25.75 cm and radius 2 cm is filled with argon gas. The Empty tube…

A: Given: Length is 25.75 cm. Radius is 2 cm. Weight of empty tube is 186.25 g. Weight of tube with Ar…

Q: Calcium carbonate decomposes at 1200 °C to form carbon dioxide and calcium oxide. If 25 liters of…

A: Given: The volume of carbon dioxide collected at 1200°C is 25 L. The final temperature is 25°C.

Q: An 18 g sample of water is decomposed into 2g of hydrogen gas and 16 g of oxygen gas. What masses of…

A:

Q: The distance from Earth to the Sun is 1.50 x 10 km. What is the distance expressed in gigameters?…

A: Convert Km to Gm ---

Q: An atom of a particular element has a volume of 7.8 x 10-" m . What is this volume in cubic…

A: Given: The volume of atom = 7.8 x 10-31 m3  This value of volume has to be converted into cubic…

Q: A sample of helium gas occupies 0.475 L. What is this volume in cm3?

A:

Q: what is the volume of a single drop of substance if 10 drops is equal to 1.549cm3?

A: Given that the volume of 10 drops of substance is 1.549 cm3. By relating this condition volume of…

Q: Suppose the metallic paper clips (which contain iron) had been replaced by magnesium or nickel.…

A: Ferromagnetism It is a property of substance in which metals act as a permanent magnets. Also it…

Q: Question attached

A: Theory or Law, though both sounds similar, they are never synonymous. Theory: Suppose, take ‘Bing…

Q: What is the standard 2C5H10(1) + 1502(g

A: Change of enthalpy during the formation of 1 mole of the substance from its constituent elements…

Q: he distance between atoms is sometimes given in pico-meters, where 1 pm is equivalent to 1 × 10^–12…

A: Given : distance between layers in pm = 568 pm

Q: What is the mass of a golf ball traveling at 88.1 ms1? The rest mass of a golf ball is 45.9 g, as…

A:

Q: 4.25 x 1024 atoms N converted to grams

A: We have given the atoms of nitrogen = 4.25 × 1024 atoms Avogadro's constant = 6.022 × 1023…

Q: 2.8 x 4.5039 =? what is the result of the operation expressed in significant numbers?

A: Since we know that according to the product rule , the least number of significant figures are…

Q: You have two solid substances that looks the same. What measurements would you take and which tests…

A: The two solid substances can be differentiated by observing their physical properties. Physical…

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.