What is the element the has a mass of 2.5g when 1.25 moles are taken of it? H2 N2 Cl2 O2 Br2

Q: The compound(NH4)2 S2 O3, Which element is present in the largest percent by mass? A. N B. S C. O…

A:

Q: 1. How many moles of Ni are there in a sample that contains 16.5 grams of nickel? moles 2. How many…

A:

Q: 5.00 g CO2, find the molar mass and the number of moles

A: 1. Given :-           mass of CO2 = 5.00 g  To calculate :-  Molar mass of CO2  Number of moles of…

Q: 4. How many atoms of sulfur are in 10.18 mol of tetrathionate (S4O,2-) ion? O 2.451 x1025 atom O…

A: 1 mol of any substance contains avogadro number of atoms or ions. Avogadro's constant= 6.023× 10^ 23

Q: he formula for dioxygen difluoride is O2F2. a. How many grams of oxygen are present in 1.69 moles of…

A:

Q: How many moles of Br are there in a sample of Br that contains 2.33×1023 atoms? _______ moles

A: Since, Number of atoms or molecules is the multiple of moles and avogadro's number. Thus,

Q: Which of the following samples has the largest mass, in grams? A) 7 moles of H2O B) 6 moles of CN…

A: Molar mass of H2O = 18.02 g/mol Mass of 7 mol of H2O can be calculated as: Molar mass of CN = 26.02…

Q: A sample is found to contain 0.650 mole of a chemical substance. a. How many atoms are present if…

A:

Q: - How many grams of oxygen is presentin5.764 X 102'molecules of carbon nonoxide? O None of the above…

A:

Q: How many moles of xenon are in 1.00 g? 1.00 g Xe =

A: given,  mass of Xe = 1.00 g   we need to calculate moles of xenon

Q: How many particles are in 0.630 moles of calcium? 1.05 x 10-24 3.79 x 1022 6.3 x 1022 9.56 x 1023

A:

Q: How many atoms of hydrogen are in 30 g of NH4NO3 (Molar mass: 80.04 g/mol) ? O A. 2.77 x 1022 O B.…

A: MOLE: The amount of substance present in whole of a compound is known as one mole and it is…

Q: How many atoms are in 5.80 moles of H O 6.02 x 1023 O 1.03 x 1023 4.00 3.49 × 1024 O

A: Mole can be defines as a standard unit for measuring large quantities of very small entities such as…

Q: How many hydrogen atoms are there in 5.0 mols of C₂H₂? 1.8 x 1025 atoms 3.6 x 1024 atom's 3.0 x 1024…

A:

Q: ow many particles are in 0.630 moles of calcium? 01.05 x 10-24 3.79 x 1022 6.3 x 1022 9.56 x 1023

A: To convert moles to the number of particles, you need to use Avogadro's number, which is a constant…

Q: How many grams of Cl are in 38.2 g of each sample of chlorofluorocarbons (CFCs)? Part A - CF2Cl2…

A: You must first determine the molar mass of each chemical and then calculate the mass contribution of…

Q: Calculate the mass of 1 mole of the following compounds (round each elements to nearest 0.5 AMU,…

A: The molar mass of the elements rounded off is as follows:- Ca - 40.078 = 40 Br - 79.904 = 80 Fe -…

Q: Given 2.6 moles of Sr, how many grams of 0, would be needed for the reaction? (molar mass of O,D…

A:

Q: Number of atoms of C in 16 moles of C,H10 are: O 6.64x10^23 385.41x10^23 O 24.09x10^23 O 96.35x10^23

A:

Q: C9 H8 O4 is in acetyl. A tablet has 0.335 g how many moles is this? If the molar mass is 180.2

A: The question is based on mole concept. we have been given mass of the tablet. We need to calculate…

Q: Which one of the following molecular formulas is also an empirical formula?

A:

Q: Consider a sample containing 0.750 mol0.750 mol of a substance. How many atoms are in the sample if…

A: The number 6.022 × 1023 indicates the number of atoms or molecules in a mole of any substance is…

Q: What is mass in grams of 0.308 moles of Pt

A: mass in grams of 0.308 moles of Pt

Q: 43.5 mol of P010 contains how many moles of P? mol P

A:

Q: How many hydrogen atoms are in a 1.0 g sample of acetic acid, CH3COOH? The molar mass of acetic acid…

A: Mass of acetic acid, CH3COOH sample = 1.0 g Molar mass of acetic acid= 60.06 g/mol Hydrogen atoms…

Q: If the student used 3.103 g of MoOs, how many moles of MoO3 were present?

A:

Q: 4. What is the molar mass of the following compounds? mo bneids (1)mumoi b. Sr(NO3)2

A:

Q: How many nitrogen atoms are there in 1 mole of nitrogen How many water molecules are there in 1 mole…

A: According to Avogadro's Number  1 mole = 6.02×1023 atoms1 mole = 6.02×1023 molecules1 mole =…

Q: 4. How many atoms of oxygen are in 10.18 mol of tetrathionate (S40,2) ion? O 3.677 x10 atoms O 6.128…

A: This question is very simple example of mole concept. First thing to calculate the number of oxygen…

Q: If the weight of calcium oxalate is 2g and weight of ammonium oxalate is 0.15 g then te percentage…

A: Given that Weight of  calcium oxalate (CaC2O4) = 2g  Weight of  ammonium oxalate ((NH4)2C2O4) = 0.15…

Q: Calculate the molar mass of the ff: 4. (NH,), HNO, 5. Mg(NO3)₂ 1. Hg (OCN) 2 C3 H5N 3 Og C6H8 O 6 2.…

A: Molar mass: The mass of one mole of a substance, measured in grams, is known as its molar mass.…

Q: Which has more atoms: 3 moles of Magnesium or 3 moles of Calcium?

A: It is used to count particles.1 mole = Avogadro's number. (NA). The number of atoms/ molecules…

Q: ↑ A compound has the empirical formula N O2 and has a molecular weight of 92 g/mol. The true formula…

A:

Q: If Avogadro's no. is taken as 'N' then 2 moles of H20 will have how many atoms of H?

A:

Q: How many atom are in 3.6 mol of carbon?

A:

Q: What are the molecular and empirical formulas for each ofthe following compounds?

A:

Q: How many grams of CaBr2 are there in 0.31 moles of CaBr2? A 24 g B 0.002 g c 7.3 g D 62 g

A: Given moles of CaBr2 = 0.31  Molar mass of CaBr2 = 199.89 g/mole Required  formula  moles =Mass/…

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.