Avogadro's number is unfathomably big. To give us some perspective, let's think of if it terms of time. Consider 1 mole of seconds. That's 6.02x1024 seconds. How many trillions of years is that? M

Q: Naturally occurring cobalt consists of only one isotope, 59Co , whose relative atomic mass is…

A: For the two isotopes of cobalt as 59Co and 60Co given data ;  Relative atomic mass (A1) of 59Co =…

Q: Suppose 1.00 mole of pennies (each penny is 0.0598 inch thick) is stacked one  atop another to make…

A: 1.00 mole of pennies = 6.023 x 1023 number of pennyeach penny is 0.598 inch thickThus Length of pile…

Q: You have a sample of neon (Xe) that contains 1 mole of atoms. If the diameter of a xenon atom is 216…

A: We have given 1 mole of xenon(Xe) gas having each atom a diameter of 216 pm. And we have asked to…

Q: Calculate the number of nitrogen atoms in a 120.0 g sample of dinitrogen tetroxide (N,04). Be sure…

A: Mass of nitrogen dioxide (N2O4) = 120.0 g  Number of nitrogen atoms = ?

Q: Discuss the contribution of Amadeo Avogadro to the quantitative aspect of Chemistry.

A: Amedeo Carlo Avogadro is an Italian chemist, well known for Avogadro's law and Avogadro's number or…

Q: Calculate the mass of 3.83 moles of barium. Your answer should be rounded to significant figures and…

A: The formula for the number of moles of any substance------ Number of moles (n) = Mass of the…

Q: Dimensional analysis & conversions. If you need scientific notation in you answer, copy this for the…

A: Given, mass of Sn(OH)2 = 10.44 g mass of tin (Sn) = ? Note:  Molar mass of Sn(OH)2 = 152.73 g/mol…

Q: For a sample consisting of 258.49 × 1023 molecules of methane, CH4, calculate

A: Given: no of molecules = 258.49 x 1023 moleculesWe know that,1 mol contain =NA= 6.023 x 1023…

Q: Dimensional analysis & conversions. If you need scientific notation in you answer, copy this for the…

A: Since, Moles is the ratio of mass to the molar mass of that atom or molecules. thus,

Q: mmonium perchlorate  NH4ClO4  is the solid rocket fuel used by the U.S. Space Shuttle. It reacts…

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Q: Taking logarithms and antilogarithms is necessary to solve many chemistry problems. For practice,…

A: Complete the table,NlnNlogN6.194.016-0.455

Q: A sample of sodium reacts completely with 0.142 kgkg of chlorine, forming 234 gg of sodium chloride.…

A: A)  Given :- mass of Cl2 = 0.142 kg or 142 g  Mass of NaCl formed = 234 g  To be calculated :-  Mass…

Q: The mass of a single strontium atom is 1.46x10-22 grams. How many strontium atoms would there be in…

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Q: This question will walk you through the process of calculating the number of atoms present in a…

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Q: Calculate the mass (in grams) of 0.722 mol of titanium. Express the mass to three significant…

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Q: In the SI system of units, the mole is one of seven base units. It is frequently used in chemical…

A: yes , mole should be considered as the SI unit. The mole is the basic unit of amount of substance in…

Q: Calculate the number of oxygen atoms in a 150.0 g sample of dinitrogen tetroxide (N₂O4). Be sure…

A: Since, Moles is the ratio of mass to the molar mass of that atom or molecules. Also, Number of atoms…

Q: A student in your class states that 9 molecules of water is the same quantity a 9 moles of water. O…

A: Number of molecules = Number of moles x Avogadro number Avogadro number = 6.0224 x 1023

Q: In heavy water, each of the hydrogen atoms is replaced by a deuterium atom. If the density of…

A: Heavy water is the deuterium oxide, which is another form of water containing heavier isotope of…

Q: mass o

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Q: How many grams of gold (Au)are there in 77.57 moles of Au? Be sure your answer has the correct…

A: To find the mass of gold in grams for 77.57 moles of Au, we use the molar mass of gold and multiply…

Q: Calculate the mass (in grams) of 4.69 x 1024 carbon atoms.

A: Given : 4.69 × 1024 carbon atoms.  We know 6.022 × 1023 atoms = mass of one mole

Q: How many grams of oxygen (O) are present in a 6.41 g sample of potassium nitrate (KNO3)? Enter your…

A: Potassium nitrate (KNO3) is ionic compound and it contains one potassium, one nitrogen and three…

Q: Determine the mass in grams of 8.01x10^21 atoms of barium. (The mass of one mole of barium is…

A: Number of Barium atoms = 8.01 × 1021 atommass of 1 mole of Barium = 137.33 gNote:1 mol of Barium…

Q: A chemist has a 19.50g sample of drinking alcohol (ethyl alcohol). what is the volume ogf the…

A: The relationship between mass and volume is given below.

Q: 5. The following contains mass measurements that are typically found with this experiment. Calculate…

A: Given: Mass of evaporating dish with original sample = 47.524 g. Mass of evaporating dish = 45.330…

Q: How many carbons, hydrogens, and oxygens does ribose have in its formula?

A: Ribose sugar  aldopentose sugar  and it is present in  RNA.  Ribose moecular formula = C5H10O5

Q: How many moles does 120.30 g lithium represent? Use correct significant figures and units.

A: The number of moles of an element present in a given amount is calculated by using the following…

Q: A chemist measures the amount of bromine liquid produced during an experiment. She finds that 2.3 g…

A: Given :- mass of bromine liquid produced = 2.3 g  To calculate :-  Number of moles of bromine liquid…

Q: Calculate the number of oxygen atoms in a 150.0 g sample of dinitrogen tetroxide (N,04). Be sure…

A:

Q: The scuba tank of oxygen gas weighs about 16 kg. How many atoms of oxygen gas (O2) are there in the…

A: Molar mass of oxygen gas(O2) is 32 g/mol

Q: The reaction between copper and sulfur is represented by the chemical equation shown below. What is…

A: Mole=Mass/molar mass  Then mole-mole relationship We will get the answer

Q: 152 A 352.44 Your Answer: 155 T 362.31 Answer 153 units G 355.67 156 X 365.88 154 D 359.12 157 You…

A: Here, this problem is based on general chemistry and we have to find out the molar mass of the new…

Q: Calculate the number of boron atoms in a 50.0g sample of tetraborane B4H10.   Be sure your answer…

A: Given that,  Weight of tetraborane, B4H10 = 50.0 g Molar mass of tetraborane, B4H10 = 53.32 g Moles…

Q: 6. This Magnesium top by ForeverspinTM weighs merely 6g. a) Write the weight of this top in…

A: The question is based on mole concept. We have to determine number of particles present in 6 gram of…

Q: 14.255 g of a compound with the molecular formula C5H4N4 contains ______ carbon atoms. Report your…

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

Q: One of the inherently satisfying features of chemistry is that chemical materials form and interact…

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Q: Calculate the number of atoms in 1.02 × 10¯º moles of helium. x 10 atoms (Enter your answer in…

A:

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: Please answer question number 2  correctly with the correct answer. there is a picture of an example…

A: 32.0 g/mol approx. is the molar mass of dioxygen (O2) gas and there are 6.022x1023 of molecules of…

Q: How do i Complete the following calculation? Determine the number of grams of Carbon in 3.14 x 1032…

A: To get the number of gram calculate mole then with the help of mole calculate mass.

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.