1. A 25g of Gold is found. Compute for the number of molecules and atoms present in the substance.

Q: Determine the molar mass of NaAlSi3O8. Use the abbreviated form of the unit in your answer and round…

A: Molar mass of  Na :- 23 g/mol  Al :- 27 g/mol  Si :- 28 g/mol  O :- 16 g/mol  These all data are…

Q: An alloy contains 78.7% zinc by mass. If a sample has a total mass of 230 grams, how many grams of…

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Q: The energy of particles in a gas *

A: 1. Volume and shape not fixed  2. Gas particles are arranged in large space , hence gas can…

Q: The number of elements known today is ___________.

A: Solution :         Elements are pure substances as they contain only one type of atoms having the…

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: What is the molar mass of the compound barium nitrate? g/mol Provide an answer with two decimal…

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Q: An automobile gasoline tank holds 21 kg of gasoline. When the gasoline burns, 86 kg of oxygen is…

A: The reaction that depicts the burning of gasoline is as follows,

Q: A student used the Procedure of this experiment to determine the formula for an oxide of tin (Sn).…

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Q: A 25.3-g sample of an unknown compound contains 0.8 g of oxygen. What is the percent by mass of…

A: Percentage by mass is defined as the ratio of the mass of a substance to the mass of the solution…

Q: What equations do I use to find the answers for the blank?

A: The heat of neutralization is the amount of heat released when base and acid combine to from salt…

Q: 1.Determine the number of atoms in the following strue b) c) (p

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Q: Calculate the mass of mercury(II) oxide

A: Ideal Gas Law;-  PV = nRT  P = pressure of gas  V = Volume of gas  n = no. of moles of gas  R =…

Q: For the molecular compound carbon tetrachloride, what would you multiply "molecules of CCl4" by to…

A: Given : Compound is carbon tetrachloride i.e CCl4. And number of molecules of CCl4 is given. To Find…

Q: A reaction produces sodium chloride fro 8 grams of sodium and 8 grams of diatomic chlorine. What is…

A: The balanced reaction taking place is  2 Na + Cl2 ----> 2 NaCl Hence we can say 1 mole of Cl2…

Q: Calculate the number of phosphorus atoms in 0.9 g of phosphorus.Answer in units of atoms.

A: Given,Mass of phosphorus = 0.9 gMoles of phosphorus can be calculated as:

Q: Calculate the number of atoms in 940 μg of scandium. Answer in scientific notation.

A: The number of moles for a given compound or a molecule refers to the ratio of its mass to the…

Q: t mass

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Q: Determine the formula weight of SrCl₂. Provide an answer to two decimal places.

A: Formula weight is the sum of the atomic weights of all atoms appearing in a given chemical formula.

Q: e the percentage yiel

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Q: Calculate the number of atoms in 95.3 μg of scandium. Enter your answer in scientific notation.

A: Given,  95.3 μg of scandium

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: Compute for the masses of the following chemical equations: 1. 2Mg O2 2MGO 2. 2. 2H90 2Hg O2 1/3./…

A: Since you have posted question with multiple sub-parts, we are entitled to answer the first 3 only.…

Q: An automobile gasoline tank hold 23KG of gasoline. When the gasoline burns 86KG of Oxygen is…

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Q: - mass, in an

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Q: 1. Calculate the mass of mercury(II) oxide

A: Given :- volume of O2 = 36.0 mL  Temperature = 50.0 °C  Pressure = 1 atm  To calculate :-  Mass of…

Q: What would happen to the ratio?

A: PH of a solution = - log [H+]  From the relation we can say that pH of solution  is inversely…

Q: The temperature at which the motion of particles theoretically stops.

A: Kinetic molecular theory states that the temperature of a substance is related to the average…

Q: Q10. How many moles of point to 102 degC? The r Assume that the density c

A: When a non volatile solute is dissolved in a solvent, its boiling point is raised. And the elevation…

Q: The chemical formula for t-butanol is: (сн,), сон Calculate the molar mass of t-butanol. Round your…

A: Since we know that molar mass of any compound is the sum of molar mass of total number of atoms…

Q: In your own word, define the following terms:

A: Solutions measured interms of concentration Concentration : no. of moles of solute per unit volume…

Q: Hot water mass 2. Total water mass

A: Given that, Volume of hot water at 40°C V1 = 100 mL Density of water at 40°C  = 0.9932 g/mL Final…

Q: How many moles of Aluminum contain 6.7x1026 atoms of Aluminum? Round your answer to 2 numbers after…

A: Given : Number of atoms of Aluminium i.e Al = 6.7 X 1026 atoms.

Q: The text tells you that, “1 trillion atoms could fit onto a period at the end of this sentence.”…

A: The number 1 trillion needs to be written using the correct number of zeros.

Q: A chemist weighed out 101. g of mercury. Calculate the number of moles of mercury she weighed out.…

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Q: If atoms are mostly empty space and atoms compose allordinary matter, why does solid matter seem to…

A: The reason why solid matter does not have space within it has to be explained.

Q: As the nylon thread is pulled out of liquids in the beaker,the measured mass of the liquids in the…

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Q: How would you find the log of the mass of stearic acid in units of Da?

A: The mass of stearic acid is 284.5 g/mol. Da is the atomic mass unit that is used to measure the mass…

Q: Calculate the maximum mass of water that could be produced by the chemical reaction. Round your…

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Q: en billion molecules of water is decomposed into hydrogen and oxygen. How many molecules of hydrogen…

A: Number of molecules of water = 109 molecules We know that,  Number of molecules of water = Number of…

Q: how do you calculate the density of magnesium?

A: The density of the unit cell is same as the density of the substance. Magnesium exhibits hexagonal…

Q: how many hydrogen enviornments are there for each of the molecules?

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Q: Determine the formula weight of KBr. Provide an answer to two decimal places.

A: Formula weight of a molecules is determine by sum of masses of all its atoms.

Q: Use the density table to calculate the volume of exactly one mole of water in mL at 35 °C. Use the…

A: Using Density table ,  Density of water at 35°C=0.994 g/ml

Q: (a) Which has more atoms: a kilogram of hydrogen or a kilogram of lead? Which has more mass? (b)…

A: (a) The atomic mass of hydrogen is much smaller than that of lead, and 1 kg of hydrogen will have a…

Q: Part D Find the number of moles of water that can be formed if you have 114 mol of hydrogen gas and…

A: Dear student , As you have asked multiple question but according to guidelines we will solve first…

Q: The following picture represents..

A: Elements When substance is made of only one kind of atoms and cannot be broken into simpler type of…

Q: at mass

A:

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.