19. The SI unit for amount of substance is

Q: e percentage of

A:

Q: . The amount of oxygen

A: The question is based on the concept of environmental Chemistry. we need to identify the term…

Q: energetic amount that represent.

A:

Q: A 12.35 g sample of aluminum hydroxide contains how many mol of hydroxide ions?

A:

Q: Analysis of a 29.1 g sample of water revealed a mass percent for lead of 4.35%. Calculate the number…

A: Mass percent of lead is equal to the mass of lead divided by the mass of water multiplied by 100.

Q: Question attached

A: Interpretation - To write the balanced chemical reaction.

Q: Explain the concept of "counting by weighing" using marbles as your example.

A: The concept of "counting by weighing" using marbles are explained below.

Q: empirical formula of the compound? List the elements in standard order for carbon compounds:

A:

Q: passing a sufficiently strong electric current throug splitting water to produce hydrogen gas and…

A:

Q: Eighteen carat gold typically contains 75% gold, 16% silver, and 9% copper by weight. Express this…

A: The percentage by weight of the different metal in eighteen-carat gold is: percentage of gold is =…

Q: Questions 21 to 24: Find the number of moles for each mass of substance given.

A: No.of moles =  Given massMolar Mass    b) No. of moles of C3H4Cl4…

Q: e mass percent

A:

Q: loss of mass mass % of water theoretical mass % of water.

A: 1. Loss of mass Assume we have CaCO3 and iswe react it with HCl then reaction proceed as:- CaCO3 +…

Q: volume of carbon dioxide gas Es. CS.

A:

Q: 1. What is stoichiometry?

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: a) How many moles of methanol are present in the sample? b) Calculate the number of methanol…

A: Since you asked multiple questions, so as per Q&A guidelines of portal i solved first three part…

Q: The relative numbers of reactants and products are represented by numbers placed to the left of the…

A:

Q: A glucose solution is frequently used as an intravenous (IV) solution to supply hydration and/or…

A: Given that: Volume of glucose = 2.05 L Molarity of glucose = 0.278 M

Q: e number of atoms in

A:

Q: le and the number of particles in the sample.

A: Avogadro number is a constant quantity for any substance. This number is 6.022 • 10^23  According to…

Q: KI, H;PO4 KMNO4, H30* ,G

A: Two reactions whose product is to be determined, individually.

Q: Half of Avogadro's number is ? Write in scientific notation

A: We have to write half of Avogadro number in scientific notation.

Q: - Part A If Avogadro's number of pennies is divided equally among the 276 million men, women, and…

A: We know that, Avogadro's number of pennies = 6.022 x 1023 pennies. Convert these pennies into…

Q: Solid lithium hydroxide is used in space vehicles to remove exhaled carbon dioxide from the living…

A: Mass of LiOH = 1kg

Q: 11. Pb(NO), # of molecules: # of elements: Name of element: # of atoms

A: Note: Since you have posted multiple independent questions in the same request, we will solve the…

Q: t mass of

A:

Q: O number of molecules.

A: Answer: equal volume propane and carbon monoxide at the same temperature and pressure have the…

Q: A 15.6 g sample of magnesium carbonate contains 3.2 g of magnesium. What is the percent Magnesium in…

A: Solution stoichiometry is mainly based on the calculation of moles and volumes. These two values are…

Q: When a log completely burns in a campfire, the mass of the ash is much less than the mass of the…

A: The law of conservation of mass states that matter cannot be created or destroyed in a chemical…

Q: What mass of barium bromate, Ba

A:

Q: I am having trouble finding the rest of the data for my precipitation Lab for percent yield of…

A: Moles of Na3PO4: =Molarity of Na3PO4×Volume of Na3PO4=0.6 mol/L×10×10-3 L         (10 mL =…

Q: Sl unit for the amount of substance is

A: The SI base units are the standard units. The standard units of measurement defined by the…

Q: mass in g

A:

Q: The mole is a really helpful way to count really small things. Are there other methods we use to…

A: Answer is explained below.

Q: Consider a 15.0-g sample of a potassium salt. This compound is 32.86% by mass of potassium.…

A:

Q: What is the percentage of potassium in a 10 g sample of potassium sulfate? Report your answer to the…

A:

Q: Determine the mass of one mole of sodium chloride.

A: Answer - the basic formula is - In the given question, mole of NaCl given =1. So here, mass = molar…

Q: The mass of 3 moles of soloing

A: Definition of mole . Is denoted by small n. Mole (n) = Weight in gram / Molar mass in g per mol Mole…

Q: any grams of chromium metal are

A:

Q: Molarity is defined as:

A: 9. Molarity is the ratio of number of moles of solute to that of volume of solution in liters.

Q: the mass of Al that will be produced

A:

Q: Element Color Key # of Atoms # of Atoms (Reactants) (Products)

A:

Q: mass of sulfate - 0.2809 g mass of the sample - 0.4213 g Based on the mass of sulfate and mass of…

A:

Q: The 145.3 grams of sodium carbonate contains how many formula units? Use 4 sig figs in Avogadro's…

A: One formula unit of sodium carbonate (Na2CO3) has molar mass of - = 23×2+12+16×3 = 46+12+48 = 106…

Q: what are clathrates?

A: Gas hydrates are one of the major marine energy resources. They are also known as the clathrates…

Q: Mass % of Mn in potassium permanganate

A: Given, Potassium permanganate,  Molecular formula = KMnO4 Molar mass of K = 39 g/mol Molar mass of…

Q: e formula for Percent by Volume.

A: We have to write the formula for percent by volume.

Q: What is the mass of one mole of carbon atoms?

A: 1 mole of carbon atoms means mass of 6.022*10^23 carbon atoms.