Determine the mass of sodium in 15.5 g of NaNO3.   a. 17.4 g   b. 0.298 g   c. 4.19 g   d.   32.9 g

Q: Calculate the number of moles in each sample. a. 72.5 g CCI4 c. 25.2 kg C2H2 b. 12.4 g C12H22011 d.…

A: The number of moles of a substance is calculated by dividing the given mass of that substance with…

Q: The use of freons is being phased out because of the damage these compounds do to the stratospheric…

A: a.

Q: 1. Which statement best describes molar mass? a. the mass of 6.02 x 1023 atoms, which is constant…

A: The molar mass of a compound is described by the moles concept. According to this concept, one molec…

Q: A sample of carbon dioxide is analyzed and determined to be 27.3% by mass carbon. If a 50.0 g sample…

A: Consider a compound AB  Percent of A = (Mass of A/Mass of AB) x 100  Law of conservation of mass:…

Q: A chemist decomposes samples of several compounds; the masses of their constituent elements are…

A: (a) Given data contains, Mass of Ag=1.651 g. Mass of O=0.1224 g.

Q: 8. KI 9. NaCI 10. Mg Cl2 11. Na;N

A: 8) KI : In the compound we have metal cation K+ from s block and I- anion. Since in the naming of…

Q: The reaction of sulfur powder (S8) with oxygen gas (O2) results in the formation of one of many new…

A: We know that, molar mass of O = 15.999 g/mol molae mass of S = 32.065 g/mol

Q: A 0.0050 g sample of boron contains B atoms, 2 4.6 x 104 b.7.7 x 10-28 C28 x 1020 d. 3.1 x 1021 e…

A: Given: mass of B = 0.0050 g molar mass of B = 10.811 g/mol

Q: 719.03 g 35.00 mL 708.4 mol 0.67 L 2.09476 mol L x 3.95 L H = 0 mL mol mol

A: Rule for significant digits in multiplication and division.The answer should have the same number of…

Q: 3. How many grams of oxygen are in 55.5 g of Fe₂O3? A. 16.6 g B. 5.57 g C. 1.86 g D. 15.3 g E. 138 g

A: The mass of the compound is 55.5 g.The chemical formula of the compound is Fe2O3.To find the grams…

Q: A student has a sample of zinc that weighs 22.19 g How many zinc atoms are in this

A: Given :- mass of Zn = 22.19 g  To be calculated :- number of Zn  atoms  molar mass of Zn = 65.38…

Q: 6. How many oxygen atoms are in 225 g oxygen gas? a. 4.23 x 104 C. 8.47 x 10:+ b. 6.84 x 10²4 d.…

A: The Given amount of oxygen gas O2 = 225 grams        the molar mass of O2 = 32 g/mol To calculate…

Q: What is the average mass (in grams) of a single nitrogen dioxide molecule? A. 3.6 x 10-26 g B. 2.77…

A: Since mass of 1 molecule  = molar mass / Avogadro's number Molar mass of Nitrogen dioxide (NO2) = 14…

Q: A 2.41 g sample of nitrous oxide (an anesthetic sometimes called laughing gas) contains 3.30 x 102…

A: Given: Number of molecules of N2O =3.30×1022 molecules And mass of N2O sample =2.41 g

Q: How many atoms Na are in 1.4 g of Na?     a. 3.7 x 1022 atoms Na   b. 1.0 x 10 -25 atoms Na…

A:

Q: When 0.210 g of iron (atomic weight = 55.85 g/mol) is burned, 0.341 g of iron oxide is obtained.…

A: The symbol for iron is Fe The symbol for oxygen is O The molar mass of Fe is 55.85g/mol The molar…

Q: kg 4. 9.2 x 10 mol dL mol L bl)

A: Here, the unit conversion has to be done from g.mol-1.L-1 to kg.mol-1.dL-1. To convert, the units…

Q: An analytical chemist measures the amount of Elements E, and E, in four samples of an unknown…

A: Given is a sample of X containing E1 and E2. To find: If X is pure? To find mass of E1 if X is 10…

Q: A compound of hydrogen and carbon is 92.3% carbon, If 40 g of hydrogen is reacted with 135 g of…

A: Molecular mass is the sum of the masses of all the atoms in a given molecule. Percentage composition…

Q: An experiment was performed in lab to produce 10.3 grams of Ca(OH)2, however the calculations…

A:

Q: which of the following has the greatest number of particles? a. 76 g of Mg(OH)2 b. 2.95 g of H2 c.…

A: a) To determine the number of particles in 76 g of Mg(OH)2, no. of moles = given massmolar mass= 76…

Q: The element rhenium (Re) has two naturally occurring isotopes, 185 Re and 187 Re. Rhenium is 62.60%…

A:

Q: A K 0.8 0.8 Ba cs/0.9 0.7 0.9 Na 0.96 ST RD 1.06 12 1.06 1.2 Ca/1.31 Y 1.21 Mg La 1.1/1.3 2.1 N Be V…

A: Given :-  The given interatomic bond is Ga-P  From diagram we have,  Electronegativity of Ga = χGa=…

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: the amount o

A: Since you have asked multiparts, we will solve the first three subparts for you. If you want any…

Q: There are 1.5 x 1022 atoms in A. 0.025 mol of gold B. 4.0 g of helium C. 2.5 x 1044 moles of copper…

A: Number of atoms = moles of element X Avogadro's number  where Avogadro's number = 6.022 X 1023

Q: For number 5 to 7, consider the following reaction. The complete combustion of methane, CH., can be…

A: CH4 (g)+ 2O2 (g)-------> CO2 (g)+ 2H2O (g) Number of moles = mass ÷ (molecular mass)

Q: Name each compound, and then calculate its mass. Express this value in scientific notation. a. 4.5 x…

A: Given Moles of Co(NO3)2 = 4.5 x 10-3 mol

Q: Determine the mass of 0.0146 mol KOH mass = ___ g Determine the mass of 10.2 mol ethane (C2H6)…

A:

Q: Let’s put the above values into the formula: V1 = 8.00 mol.L-1 × 2.42 L13.0 mol.L-1V1 = 8.00…

A: The dilution equation is expressed as C1×V1=C2×V2On rearranging the above equation to get V1…

Q: A sample of ammonia (NH3) has a mass of 84.7 g. How many molecules are in this sample?

A:

Q: A compound is composed of 48.88 % carbon, 7.75% H, 25.42% N, 12.54 % O, and the remainder other…

A: Calculating mass of carbon. Mass percentage of carbon/Total mass of the given compound*100

Q: The percentage of Carbon Dioxide is 273%. How many grams of carbon would there be in 5 grams of…

A: First we will calculate moles of carbon dioxide using the given mass and molar mass of carbon…

Q: What is the molar mass of calcnum chloride hexahydrate! a 75.53 g'mol, b.111.0 gmol c 1170 gmol d.…

A: The answer to the following Question is:

Q: A nutrition table lists apples with a potassium content of 4600 mg/pound. Assume an average apple is…

A: According to the given data, Mass of an average apple = 75.0 g Because, 454 g = 1 poundMass of an…

Q: 4. Determine the number of H atoms in 8.50 g of water.

A: As per your indication we solved the 4th question. Please find the below attachment

Q: An analytical chemist measures the amount of Elements E, and E₂ in four samples of an unknown…

A: •Given:-

Q: 11.68 grams of titanium metal and 66.94 grams of chlorine are combined to make titanium…

A: Given: The mass of titanium metal taken = 11.68 g The mass of chlorine taken = 66.94 g We have to…

Q: Determine the mass percentage of F in C6H11OF3. A. 36.50% B. 37.33% C. 39.54% D. 40.67% E. none of…

A: Mass of one mole of Carbon, Hydrogen, Oxygen, and Fluorine are calculated as follows,

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.