The mass of ten paper clips was found to be 10.135 g. What is the average mass of a paper clip in this sample?

Q: An automobile gasoline tank holds 21 kg of gasoline. When the gasoline burns, 84 kg of oxygen is…

A: Law of conservation of mass: Mass can neither be created nor be destroyed. But transforms only from…

Q: nd contains 12.4g of hydrogen. What is the percent by mass of hydrogen in the compound?

A: Given A 37.1 g sample of an unknown compound contains 12.4g of hydrogen. What is the percent by mass…

Q: the final answer is needed to be converted into pints?

A:

Q: what is the percent by weight of sugar in soda if the average mass of sugar in soda is 35 g and the…

A: The mass of solute present in 100 g of solution known as the (w/w) percent concentration of the…

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: what is the mass, in grams

A:

Q: A sample of sodium reacts completely with 0.213 kg of chlorine, forming 351 g of sodium chloride.…

A:

Q: What mass of sodium chloride and what volume of water a.

A: The mass percentage of any substance is given by the formula below. Mass percent=Mass of the…

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: How many moles are in 1.75g Oz?

A:

Q: A bottle of sodium hydroxide (NaOH) was found to contain 1.23 lb of this chemical. Express the…

A: The conversion factor can be described as the numerical factor that is used to convert one set of…

Q: mass, in

A:

Q: If 0.750 g of orange mercury oxide decomposes to 0.695 g of liquid mercury and oxygen gas, what is…

A: Given data contains, Mass of mercury oxide is 0.750 g. Mass of liquid mercury is 0.695 g.

Q: What is the volume of a piece of silver metal that has a mass of 143 g?

A:

Q: What is Kc?

A: Interpretation: The information about Kc is to be provided.

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 is the mass in grams of 125 iron atoms?

A: Given that: Number of iron atoms = 125 Atomic mass of iron =  55.845 g/mol

Q: y grams of

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

Q: any grams of CO is

A:

Q: What did you notice about the relationship between anobjects Mass and its volume

A: Given What did you notice about the relationship between anobjects Mass and its volume

Q: A 33.5 metric ton sample of ore yields 2.95 metric tons of iron. What is the percent of iron in the…

A: Given that,Mass of ore sample = 33.5 metric tonMass of iron = 2.95 metric ton

Q: Calculate the mass of 65.0 cm3 of mercury.

A: Ans

Q: In a reaction, 34.0g of chromium(III) oxide reacts with 12.1g of aluminum to produce chromium and…

A: 34.0g of chromium(III) oxide 12.1g of aluminum Both of these react to produce 23.3g of chromium and…

Q: percent mass

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Q: t mass

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Q: e the percentage yiel

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Q: e mass of

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Q: a chemist has 19.50g alcohol. what is the volume of the sample, what additional information is…

A: The volume of a given liquid is defined as the amount of the space occupied by the liquid that fully…

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: e percentage of Mg in the sample

A:

Q: A sample of 508.4 g of copper completely reacted with oxygen to form 572.4 g of a copper oxide…

A: Given : Mass of copper reacted = 508.4 g And mass of copper oxide produced = 572.4 g

Q: e quantity of

A:

Q: In one experiment you reacted 45.7g of aluminum with 182.8g of iron (iii) oxide to produce aluminum…

A: The chemical equation can be written as: The chemical equation needs to be balanced so that it…

Q: Substance AB2 is 60% A by mass.  What is the percent A by mass for substance AB?  Justify your…

A: For given compound AB2, 60% by mass is A then obviously 40% is B. That is for 100g of given…

Q: What is the mass of copper, g in 1.652g of copper chloride? what is the mass of chlorine g

A: Copper Chloride ( CuCl2 ) Molar mass of CuCl2 = 134.45 g/mol   1 mole CuCl2 contains ;  1 mole of…

Q: How can mass and volume data for an unknown sample be used to identify the unknown?

A: Mass gives the quantitative aspect of the substance i.e., how much amount of the matter is contained…

Q: t mass of oxygen is

A:

Q: Question attached

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Q: A 13.0-g sample of X combines with a 34.0-g sample of Y to form the compound X Y 2 . What is the…

A: Law of Conservation of mass: According to the law of conservation of mass, mass can neither be…

Q: Rearrange these terms to solve for mass (m).

A:

Q: How many moles would be in 75.45 g NaCl?  (no units/labels and the number should NOT be written in…

A: Given  mass of NaCl  = 75.45 gram  Molar mass of NaCl  = (23 + 35.5)gram/mole…

Q: y grams of i

A:

Q: What is the mass of one oxygen molecule in kg?

A: The chemical formula of an oxygen molecule is O2 The mass of one mole = Molar mass = 32 g/mol Now,…

Q: what are five units that is used to measure mass?

A: There are SI and non-SI units for measuring mass

Q: If 45.0 gg of gray iron powder reacts with 24.9 gg of red phosphorus powder, what is the mass of the…

A: First convert mass into mole by diving molar mass respectively Then Calculate limiting reagent by…

Q: Solid iron reacts with diatomic oxygen gas to produce iron (III) oxide. If 15 grams of iron reacts…

A: given data  solid iron = 15 gm diatomic oxygen =45 gm find mass of Fe3O4

Q: In a reaction, 33.4 g of chromium(III) oxide reacts with 11.9 g of aluminum to produce chromium and…

A: The reaction taking place is between chromium (III) oxide i.e Cr2O3 and aluminium i.e Al to produce…

Q: If 45.98 g of sodium combines with an excess of chlorine gas to form 116.89 g of sodium chloride,…

A: Limiting reagent is the reagent which is consumed in the chemical reaction completely. It decides…

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.