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Q: A chemist adds 370.0 mL of a 4.8 × 104 mmol/L magnesium fluoride (MgF₂) solution to a reaction…

A: Answer:Number of moles of a specie in a solution is equal to the product of its molar concentration…

Q: Am I right? Calculate the mass percentage of water in the hydrate. Show the calculations. Sample 1…

A: mass percentage of water = Mas of waterMass of hydrate x 100

Q: How many significant figures are in each number?

A: Given :- A)  0.1 s B)  108,700 km  To calculate :-  Number of significant figures in each number

Q: Express your answer to one significant figure. 1 g = Submit Part D 1 g = E| ΑΣΦ Express your answer…

A:

Q: Calculate the mass of dinitrogen tetroxide (N₂O4) that contains a trillion (1.0 × 10¹2) nitrogen…

A: We have to predict the mass of dinitrogen tetroxide.

Q: Part A Copper(II) fluoride contains 37.42% F by mass. Use this percentage to calculate the mass of…

A:

Q: Use the formulas below and the data in the table to fill in the empty spaces in the table. (Apply…

A: The equations we will be using in filling the tables are  1) Area = Length X Width

Q: The boiling point of a liquid is found to be 302 K. What is this temperature on the Celsius and…

A: Given- Boiling point of the liquid = 302K To find - 1) Temperature in °C 2) Temperature in °F…

Q: Take the mass measurement with nitrogen (28 dalton or atomic mass units per molecule) and the mass…

A:

Q: Make a graph of the average mass vs. year. Make sure axes are labeled.

A:

Q: MISSED THIS? Read Section 4.4 (Page); Watch KCV 4.4, IWE 4.6. For the reaction shown, compute the…

A: Given,The reaction:2 Al(s) + 3 Cl2 (g)  2 AlCl3 (s)A. mass of Al =1.5 g  mass of Cl2 = 1.5 gB. mass…

Q: Measurements have shown that the concentration of salt in seawater is 35.5 g·L 1 '. Calculate the…

A: Concentration is basically the availability of the solute per unit volume of solution. It is usually…

Q: 5. If 1.4% of the mass of a human body is calcium (i.e., 1.4 g Ca = 100 g bw (body weight), how many…

A: To express the concentration several  terms can be used  like molarity, molality, mass percentage…

Q: The planet Mars orbits 2.279 x 10¹¹ m from the Sun. Express the distance using the appropriate…

A: 1m = 10-3 mm1 km = 1000 m1 nm = 10-9 m1 Gm = 109 m

Q: Which molecule has the most carbon atoms? How many carbonatoms does it contain?

A: Before we move towards the most number of Carbon atoms and number of Carbon atoms, let's simplify…

Q: Express the corresponding readings, taking into account the figures that you can read with certainty…

A: In the given scale we have ten divisions between marked values. That mean we have ten divisions for…

Q: Br H₂C-CH₂ SPECIAL The name of compound C is: VI 3 IV H M FC # 22 CH3 GREEK ALPHABET CH3 8 X . F O 8…

A: We need provide the IUPAC name for the given organic molecule.

Q: The distance from the Earth to the moon is 239,000 miles. The Apollo 11 mission took 73.45 hours to…

A: Given: The time taken to reach the lunar orbit = 73.45 hours The average speed = 5500 km/hr We have…

Q: Algebra 15. Solve each of the following equations for the unknown variable and calculate its value…

A: Significant figures are the total number of meaningful digits that help in improving the accuracy of…

Q: mol 93.4 X 32. L L 742.72 m 48.8 s 458.56 m 89.0 s = = = mol m 0²-2 S m 0-²-2 S Be sure each answer…

A: Use the following rule for division and multiplication: The number of significant figures in the…

Q: Calculate the mass of vanadium(V) oxide (V2O5) that contains a billion (1.000e9) vanadium atoms. Be…

A:

Q: Chemist

A:

Q: What is the maximum mass of pure gold that could be extracted from 6.0 kg of calaverite, a gold ore…

A: Given: The mass of calaverite is 6 kg = 6000 g  The molar mass of AuTe2 (calaverite) is 452.17 g/mol…

Q: Use your calculated density of your unknown metal sphere to determine the mass of an object made…

A: from above information we know that the dendity  of the unknown sphere is is equal to the density of…

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

A: Given, mass of sample of tetraborane (B4H10) = 50.0 g Number of atoms of boron (B) = ? Note: molar…

Q: number of significant figures. To avoid rounding errors, do not round your answers until the very…

A:

Q: What is the error in the answer to the following? a) (22.10 ± 0.01) + (37.51 ± 0.02) = b) (30.88 ±…

A: The rules to addition: z+∆z =(x±∆x) + (y±∆y) z = x+y∆z = ∆x+∆y The rules of subtraction z±∆z =(x±∆x)…

Q: In the number 723.4, which digit is estimated? 02 0 3 01 4

A: The given number is = 723.4This number contains a decimal place.

Q: The value of the Euro is currently 1 Euro = 1 € = $1.2945 US and the price of 1 liter of unleaded…

A: Here given---- 1 Euro = 1.2945 US dollars The price of 1 liter of unleaded gasoline in France is…

Q: Perform the following calculation to the correct number of significant figures: O 130.85 O 130.8…

A: Addition and subtraction:In this case we round the answer to the same number of decimal places as…

Q: Determine the molar mass of Fe(NO3)2. Provide an answer to two decimal places.

A: Molar mass of compound obtained taking atomic mass of elements present in this compound.

Q: Gold can be hammered into extremely thin sheets called gold leaf. An architect wants to cover a 100…

A: The density of a substance is the mass of the substance per unit of volume.  1 ft = 12 inch  1 inch…

Q: Calculate the number of carbon atoms in 1.21 g of table sugar, C₁2H22 O11- Express your answer using…

A: The Avogadro number, denoted as "N_A", is a fundamental physical constant that represents the number…

Q: What is the density in g/mL of gasoline if 0.066 kg occupies 100 mL?

A: density = mass/volume  mass = density × volume

Q: Ammonium phosphate ((NH4),PO4) PO is an important ingredient in many fertilizers. It can be made by…

A: Answer :-  Mass of ammonium phosphate, (NH4)3PO4 produced from 8.1 g ammonia = 24 g…

Q: For the reaction below, determine the difference in relevant particles that allow for determination…

A:

Q: Gold has 79 electrons per atom and an atomic mass of 197 u. Part A What is the total charge of all…

A: Given  atomic mass of gold = 197 u = 197 g/mol = 0.197 kg/mol  1 atom of gold = 79 electrons  mass…

Q: 1. A student wanted to find the density of an object of unknown composition with a volume of 5.50…

A: Density, d = m (g)V (cm3) m = mass and V = Volume Percentage uncertainties: Volume:  % uncertainity…

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.