How much does 19.11 moles of X weigh in grams? (Assume that the molar mass of X is 28.84 grams per mole.) Report your answer to three decimal places.

Q: Part B How many grams are in 0.290 mole of Cl2 ? Express your answer to three significant figures.

A: Mole concept: The number of molecules or atoms present in the one mole of the substance is equal to…

Q: C6H15N express your answer in atomic mass units to two decimal places

A: Atomic mass unit  mass equal to one twelfth of the mass of an atom of carbon-12.  Atomic mass unit…

Q: A mole of carbon has a mass of 12.01 g. and a mole of aluminum has a mass of 26.98 g. • Define what…

A: The mole is the standard unit of measurement for amount of substances. The mole is essentially a…

Q: carbon

A:

Q: Assume a 1.2 kg sample of a compound contains 0.9 kg of carbon. to one decimal place there are how…

A: Given 1.2 Kg of a compound contains 0.9 Kg of carbon, C.

Q: How many helium atoms are there in a helium blimp containing 537 kg of helium? Express the number of…

A: Given,Mass of helium = 537 kg                                   = 537 × 103 g     (1 kg = 103 g )…

Q: Consider a 5.00 kg bag of sugar, C12H22O11, and answer the following question. Be sure to show your…

A: Given: Mass of sugar = 5.00 kg To calculate the mass of Carbon

Q: A modern penny weighs 2.5g but is only 2.52% copper by mass. Calculate the number of Cooper atoms in…

A:

Q: Please calculate the mass in grams of one mole of each of the following:    a. atoms of carbon-12…

A: (a)One mole of any substance contain 6.022*10^23 atoms. Therefore, mass of one mole of atoms of…

Q: What is the ratio of hydrogen atoms (H) to oxygen atoms (O) in 2 L of water? Enter the simplest…

A: Dear student since you have asked multiple questions but according to guidelines we will solve 1st…

Q: A certain organic compound has the formula C8H13O2. A sample of this compound weighs 5.89 grams.…

A: Mass of C8H13O2 = 5.89 g Molar mass of C8H13O2 = 141.184 g/mol Moles of C8H13O2 =MassMolar mass=5.89…

Q: Convert 1.89 • 1024  atoms of carbon to coles of carbon

A: Given, the number of moles of carbon atoms = 1.89 x 1024 atoms 1 moles of carbon atom = 6.022 x 1023…

Q: How many grams of CCl4 will contain 36.00 g of carbon? express your answer in decimal notation.

A: Mole of carbon tetrachloride is equal to mole of carbon

Q: A scientist has two samples of gas: The first sample contains one mole of argon atoms and has a mass…

A: 1 mole of any gas has equal no. Of atoms i.e., avogadro no. of atoms 6.023*1023 atoms. Or Equal…

Q: 22) An 85.5-g sample of Hg in a barometer 23) A 0.251-g Ti metal heart valve 24) A 10.0-g sample of…

A: 22) Given: Mass of Hg = 85.5 g Atomic mass of Hg = 200.59 g/mol.

Q: Using dimensional analysis, convert 5.7 moles of Fluorine into atoms. (1 mol = 6.02 x 1023). Round…

A: We know that, 1 mole = 6.02 x 10^23 atoms So, Number of atom = Number of miles x ( 6.02 x 10^23)

Q: Find in the chemical literature at least three values for the molar mass of lithium determined since…

A: "Since you have posted a question with multiple sub-parts , we will solve first sub-parts for you .…

Q: How many grams of oxygen are combined with 94 grams of iron to make the iron(II) oxide compound?

A: Given: Oxygen is combined with iron to give iron(II) oxide. Mass of iron = 94 grams.

Q: Using dimensional analysis, convert 5.7 moles of Fluorine into atoms. (1 mol = 6.02 x 1023). Round…

A:

Q: Calculate the number of atoms in 95.3 μg of scandium. Enter your answer in scientific notation.

A: Given,  95.3 μg of scandium

Q: Write the chemical formula for each compound, and then calculate the amount in moles in each sample.…

A: Given: Mass of copper(II) sulfate pentahydrate = 78.1 kg

Q: Determine the mass (in grams) of aluminum present in 1.07 grams of Al2S3? Do not type units into…

A:

Q: Find the mass of 1 molecule of Li H in gram. a. 7.949 b. 1.32 x1023 С. 4 d. 1.32 x10-23

A:

Q: Do you round before or after multiplying the molecular mass of an element for example I multiplied…

A: Given  Molar mass of Carbon =12.011  Then Molar mass of  C12 =?

Q: 1.75 x 1025 selenium atoms contains ____ moles of selenium. Report your answer to 3 s.f. (hint: this…

A:

Q: b. U.00004042 fng 4.042 x 10-5 mg Which sample of element is heavier? Show appropriate calculations…

A: Given: The moles of N2 = 2 moles. The moles of Fe = 1 mol. The moles of F2  = 1.5 moles.

Q: (a) What percentage of the electrons originally in the cube was removed? % (b) By what percentage…

A:

Q: How many neon atoms are contained in (6.89x10^2) grams of neon? Use at least two decimal places for…

A: Given -> Weight of neon = 6.89 × 102 gram

Q: Jotmest Atoms are the smallest spherical particles that make up any matter. If 6.0x1023 atoms of…

A: Introduction: Atomic mass is an average of the masses of a number of different atoms.It is also…

Q: Each atom in a crystal of aluminum metal occupies a theoretical cube that is 0.255 nm on a side. If…

A: side of the cube = 0.255 nm = 0.255 x 10-7 cm1nm = 10-7cmVolume of the theoretical cube = (side)3 =…

Q: 16. While cleaning your attic, you find your old rock collection. If 74.2% of the rocks have a mass…

A: If a substance is present in more than one form then average mass of that substance given by…

Q: A certain ore is 30.3% nickel by mass. How many kilograms of this ore would you need to dig up to…

A: Introduction: We have to calculate the mass of ore.

Q: State the number of protons in Ag^+. Express your answer as an integer.   State the number of…

A: Electronic configuration of Ag (47) = 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 5s1 Number of protons…

Q: How many moles of mercury (Hg) would be found in 250. grams of mercury?

A: Given that: mass of Hg = 250 g To find: number of moles of Hg?

Q: You have a sample of 1.204 × 1024 atoms of gold. How much does this sample weigh?

A: Given  number of atoms of gold = 1.204 * 1024 atoms To find weight of this sample. Required data -…

Q: Consider a 5.00 kg bag of sugar, C12H22O11, and answer the following question. Be sure to show your…

A: Given: 5.00 kg bag of sugar, C12H22O11

Q: How many moles of N are present in 1.50 moles of Benadryl? Express your answer to three significant…

A: 1.50 moles of Nitrogen

Q: a) Using NO2(g) as an example, show with dimensional analysis that the molecular mass and molar mass…

A: To convert u (amu) to g/mol, u is converted to g and then multiplied with the Avogadro constant.…

Q: Fe2O3 express your answer in atomic mass units to two decimal places

A: Atomic mass unit is a unit which express the relative masses of atoms. One atomic mass unit is equal…

Q: What is the mass in grams of 7.70 × 1014 lead (Pb) atoms? × 10 Enter your answer in scientific…

A:

Q: What is the mass of one mole of Sg?

A: Mass of one mole of any element means it's molar mass

Q: A cable making company produces a metal wire, with a diameter of 1.00 mm. What will be the length of…

A: Volume of a cylinder (wire) is given by: V=πr2h…

Q: Consider a 5.00 kg bag of sugar, C12H22O11, and answer the following question. Be sure to show your…

A: Given:  Mass of sugar =5.00 Kg To Calculate: Mass of H atom contained in the sugar

Q: If you have 1.45x10^25 atoms of potassium, how many moles of potassium do have? Round to significant…

A: Number of atoms can be calculated by multiplying number of moles with Avogadro number.

Q: Calculate the number of moles found in 967 grams of Sr(C2H3O2)2. mol Give your answer to 2 decimal…

A: Given, mass of Sr(C2H3O2)2 = 967 g number of moles found in 967 g of Sr(C2H3O2)2 = ? Note:  Atomic…

Q: Two samples of a compound containing elements A and B are decomposed. The first sample produces 15g…

A: sample A contains 15 g sample B contains 35 g so, A:B = 15:35 = 0.428 hence they must be combined in…

Q: Please use the precision of the values in the periodic table link to determine the correct number of…

A: The atomic mass of  He = 4.003 amu The atomic mass of  Fe = 18.998 amu The atomic mass of  Na =…

States of Matter

The substance that constitutes everything in the universe is known as matter. Matter comprises atoms which in turn are composed of electrons, protons, and neutrons. Different atoms combine together to give rise to molecules that act as a foundation for all kinds of substances. There are five states of matter based on their energies of attraction, namely solid, liquid, gases, plasma, and BEC (Bose-Einstein condensates). 

Chemical Reactions and Equations

When a chemical species is transformed into another chemical species it is said to have undergone a chemical reaction. It consists of breaking existing bonds and forming new bonds by changing the position of electrons. These reactions are best explained using a chemical equation.