1. CACO3 23 BaF2 3. 4 H2PO4 4 Sr(OH)2 5.3 Al2(Cr207)3

Q: 1.0g of this compound has .272g of carbon and .727g of oxygen, find the formula and name for this…

A: Given, .272g of carbon and .727g of oxygen Therefore,                  C : O    (.272/12) :…

Q: Violet has found a container of aluminum bromide that says it contains 3.67 moles of AlBr3. What is…

A:

Q: What is the formula for mass

A: For liquids, mass can be calculated from the below formula.

Q: How it is useful and important the knowledge of mass percent and morality calculation in healthcare…

A: Mass percent is the measurement of an element in the molecule,compound or tablet in case of…

Q: In today's laboratory you are going to mix elemental copper and elemental sulfur to form a…

A: molar mass of Copper = 63.55 g/mol The relation between the mass of a substance and the number of…

Q: percent

A: CuO  + H2 ------------------ Cu  + H2o  Mm of CuO = 79g No of mole of Cu is = 4.7/79= 0.21mol From…

Q: How many helium atoms in 535kg of helium

A: A question based on atomic structure that is to be accomplished.

Q: PART B. Spectrophotometrilc Determination of the Copper Content of a Penny Mass of penny:3.138 Date…

A:

Q: Determine the number of atoms in 30.0 g of S.

A: The given mass of S is 30.0 g The molar mass of S is 32 g The conversion of mass to moles can be…

Q: A 24.8 g sample of water contains how many water molecules?

A: Molar mass of water = 18 gWe have 24.8 g water no of moles of water = 24.8 g18g/mol…

Q: how many carbon atoms are, hyrdrogen atoms, oxygen atoms, and nitrogen atoms are in this molecule?

A: The molecule given in the question is a hydrocarbon compound which has heteroatoms (O and N).…

Q: ind the number of atoms in 9.4 g B. answer in units of atoms

A: Number of atoms, ions and molecules present on a given amount can be determined by “Mole Concept”.…

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

A:

Q: In order to calculate the number of atoms in 2.31 moles, one must use

A: Recall the data, Number of moles = 2.31 moles Number of atoms =?

Q: what is the average mass of a single sulfur atom in grams?

A: Number of moles of sulfur can be calculated by dividing number of atoms by Avogadro's constant.

Q: How many atoms of He are in 2.59 moles of He? In scientific notation

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

Q: atoms

A:

Q: How many atoms of calcium are in 1.00 g?

A: Given  Mass of calcium    = 1 gram  Number of atoms = ?

Q: Determine the mass of oxygen in a 5.8-g sample of sodium bicarbonate. Give your answer with correct…

A:

Q: How many hydrogen atoms are in 23.7 g of water

A:

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

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

Q: what is the formula mass of calcium nirate? ( round to a whole number)

A: To Write the formula of a chemical compound. first write the Symbol of cation and then write the…

Q: What is the formula mass of gold(I) phosphate?     Include the unit in your answer.

A: Multiply subscript of every element in formula by its atomic weight (relative atomic mass) as…

Q: Determine the number of neon atoms in a lamp that contains 20.17 g of neon gas sample.

A: Given mass of Neon gas = 20.17 g Number of atoms in given mass of Neon = ?

Q: Calculate the mass of 3.57 mol of vanadium.

A:

Q: calculate the number of atoms in 4.82 miles of magnesium

A: 1 moles of magnesium contains  Avogadro numbers of magnesium atoms       Avogadro numbers  =…

Q: round answer to three significant figures. The formula of sodium nitrate is NaNO3. determine the…

A:

Q: Rank the following according to number of atoms (greatest to least):

A: To compare the number of atoms in each substance, we need to use the concept of moles. One mole of…

Q: The formula for alum has 1 Al. How many units alum could be made from 7 Al atoms? Answer with a…

A: The molecular formula of alum is K2(SO4)·Al2(SO4)3·24H2O or KAl(SO4)2·12H2O

Q: A 3.20 mol sample of aluminum represents how many atoms?

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

Q: How many fluorine atoms are in 44 g of fluorine?

A: It is given that:Mass of fluorine = 44 g

Q: 330 hydrogen with unlimited amount of nitrogen makes?

A: Nitrogen reacts with hydrogen to form ammonia. The equation for the balanced chemical reaction is…

Q: 2.6 mol lithium bromide to total number of ions

A: We know that 1 mol of any substance contains Avogadro's number of substances. We can determine…

Q: What is the average atomic mass of chlorine in this sample?

A: Answer:

Mass Spectrometry

This process is an instrumental method in which a sample is changed to fast moving positive ions by electron bombardment. The charged particles vary due to their different mass to charge ratio and are estimated with the help of this difference. It is also called mass spectroscopy.