A sample of sodium reacts completely with 0.213 kg of chlorine, forming 351 g of sodium chloride. What mass of sodium reacted?

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: You find a solid material and you want to find the identity of this sample. You measure the mass of…

A: Mass of the sample is 52.635 g. Volume of water is 466 mL.

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 mass of 1570 cm³ of tungsten.

A: 2.  a) given :- volume of tungsten = 1570 cm3  To calculate :- mass of tungsten

Q: In Section 1.10, it was stated that 1 mol of sand grains would cover the state of Texas to several…

A: SOLUTION: Step 1: Simple Volume of 1 sand grain = (0.10 mm)3 = 0.001 mm3. 1 mole of sand =…

Q: When 16.8 g of carbon were burned in the presence of 55.6 g of oxygen, 10.8 g of oxygen remained…

A: One mole of carbon reacts with one mole of oxygen gas to produce one mole of carbon dioxide gas.…

Q: In an experiment, 10.00 g of red mercury(II) oxide powder is placed in an open flask and heated…

A: In this problem e have to find the mss of oxygen formed by using the law of conservation of mass.…

Q: The radius of a lead atom is 175 pm. How many lead atoms would have to be laid side by side to span…

A: Given: Radius of each lead atom = 175 pm = 175 X 10-12 m                          (Since 1 m = 1012…

Q: e mass of 1

A:

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: Which is more "correct", a theory or law?

A: Given statement is :  Which is more "correct", a theory or law?

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: 8.55 In the process of Is the of I II? III Skill-Building in similar pairs) Student II writes: A1 +…

A: Given: A element = red atom B element = green atom

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: 4. Compare the total mass of the reactants with the total mass of the products: Total Mass of the…

A: Given reaction is,  K2CrO4 (aq) + Pb(NO3)2 (aq) →2KNO3 (aq) + PbCrO4 (s)

Q: Aluminum has an atomic radius of 0.1431 nm and weighs 26.9815 g/mol. Compute for its density

A: Given : Atomic weight of aluminium = 26.9815 g/mol. And radius of aluminium atom = 0.1431 nm =…

Q: A sample of metal weighing 4.28 g is combined with oxygen; the metal oxide weighs 40.9 g. The mass…

A: Mass percentage is one way of representing the concentration of an elements or components in…

Q: What is the mass of phosphorus in a 45 kg person? .017 mass of P Incorrect

A: Determine mass of phosphorus in 45 Kg person?

Q: e mass of c

A:

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: The radius of a aluminum atom is 143 pm. How many aluminum atoms would have to be laid side by side…

A: Given : Radius of Aluminium atom = 143 pm And length of line to be made = 4.38 mm  Since 1 pm =…

Q: A pure titanium bicycle frame contains 1.61 x 10^25 titanium atoms. What is its mass in kilograms?

A: 1 mole of any substance contain 6.022 × 1023 unit of that substance. that substance may be atoms,…

Q: 1. A student measured a 6.790 g sample of a hydrated salt. After heating, the mass of anhydrous salt…

A: a. Given that weight of hydrated salt is 6.790 g and mass of anhydrous salt is found to be 4.501 g.…

Q: what is the volume of water measured with a Beaker Beaker mass= 110.00g water mass= 45.00 water +…

A:

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 mass

A:

Q: In a reaction, 28.6 g of chromium(III) oxide reacts with 10.2 g of aluminum to produce chromium and…

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: A student measured a 6.790 g sample of a hydrated salt. After heating, the mass of anhydrous salt…

A: a) Given that weight of hydrated salt is 6.790 g and mass of anhydrous salt is found to be 4.501 g.…

Q: A piece of aluminum foil is 0.0150 cm thick. Calculate the thickness of the aluminum foil in terms…

A: Thickness of the aluminum foil = 0.0150 cm…

Q: 3) Na is present in seawater as 1.25 g Na/kg seawater. What volume of seawater as in liters(L),…

A:

Q: he mass of 1 n

A:

Q: total mass i

A:

Q: 8.W 8 What

A: It is C. The reaction rate is halved

Q: What is the unit of energy? Select one: a. Joules b. Newton c. Kilograms d. moles

A: What is the unit of energy?

Q: A solid cube of aluminum (density 2.70 g/cc) has a volume of 0.200 cc. It is known that 27.0g of…

A: Given,  The density of aluminum = 2.70 g/ cc The number of atoms present in volume 0.200 cc. of a…

Q: A student has 3.86g of iron metal what would be the mass of rust produced if all of the iron was…

A: Moles of iron present in the 3.86 g of iron metal is :

Q: y grams of i

A:

Q: A piece at metal with a mes of 125 g n placed into a grahatest cyinder that conta 25 ofw ing the…

A: Using the Formula of density we can solve this problem.

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

A:

Q: The mass of 1570 cm³ of tungsten

A:

Q: When a 39.71 g rock was placed in a graduated cylinder with 18.62 mL of water, the water level rose…

A: Ratio of mass to volume is termed as density which can be represented by a formula as:…

Q: The symbol of K+ represents one?

A: + sign indicates loss of electrons.

Q: A 7.57 g sample of calcium carbonate completely decomposes into calcium oxide (lime) and carbon…

A: A chemical reaction is a symbolic representation of the conversion of substances to new substances.…

Q: calcium, how many kilograms of calcium are there in a

A:

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: What is the mass of phosphorus in a 45 kg person? mass of P = %3D TOOLS x10

A:

Q: Steam at a temperature of 134 °C is vented into an aluminum cup of mass 218 grams containing 600…

A: Given, Initial temperature of steam= 134°C Final temperature = 20°C Iniatial temperature of…

Q: Mass = 1kg, Speed = 2m/s. KE = ?

A:

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.