A syringe contains a sample of air at room temperature and pressure. Assuming no leaks in the syringe and no change in temperature, when the volume of the syringe is decreased from 40 mL to 20 mL, the gas pressure in the syringe will --

Q: Mercury has a density of 13.60 g/cm3. What’s the volume of 2.4 mole of mercury?

A: Given: The moles of Hg, (n) =2.4 moles. The density of mercury, (ρ) = 13.60 g/cm3

Q: How did you end up getting 6.023 x 1023? Why can't we divide 8.50 x 1015 by 32.06 (grams of S)?

A: There are different formulas to calculate the number of moles of the substance based on the given…

Q: 4.08x10^24 particles of hydrogen bromide weight how much?

A:

Q: If a rectangular piece of cement is 2.00 cm x 2.00 cm x 9.00 cm and has a mass of 108 what is its…

A: Given: dimensions: 2.00 cm×2.00 cm×2.00 cm mass = 108 g

Q: Using the fake periodic table above, what is the correct formula for: elegant (II) runnite Enter…

A:

Q: According to the National Heart, Lung, and Blood Institute, LDL-cholesterol levels of less than 130…

A: LDL-cholesterol stands for low density lipoprotein cholesterol. These cholesterol are bad for the…

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: 1. A friend claims that a metric ton is more than twice the mass of an English ton because a…

A: 1. A friend claims that a metric ton is more than twice the mass of an English ton because a…

Q: 14K yellow gold is an alloy that contains gold, copper and silver. A 14K gold ring contains 6.90g of…

A:

Q: How manu Mm.are in 2.57x105 Km lise 3 conversion factors)

A:

Q: A major component of gasoline is octane (C,H18). When liquid octane is burned in air it reacts with…

A: Given :- number of moles of water produced = 0.090 mol  To calculate  :- number of moles of octane…

Q: A patient is to receive 44 mmol of potassium phosphate dibasic (MW 174 mg). How many mg of potassium…

A:

Q: Calculate the mass of 0.11 moles of Cu(NO3)2. grams Give your answer to 2 decimal spaces.

A: Given that , No. Of moles of Cu(NO3)2 = 0.11 moles

Q: Liquid octane (CH, (CH3(CH,) CH,) will react with gaseous oxygen (0,) to produce gaseous carbon…

A: Chemical Reaction would be :  C8H18 + O2 --> CO2 + H2O  Mass of O2 = 46.0 g Mass of C8H18 = 100.0…

Q: Green plants use light from the Sun to drive photosynthesis, a chemical reaction in which liquid…

A:

Q: A chemist adds 0.90 L of a 0.48M barium acetate (Ba(C,H,O,).) solution to a reaction flask.…

A:

Q: Be sure to answer all parts. (a) Calculate the number of oxygen molecules and the number of oxygen…

A: 1- First Calculate the moles of O2 Molecules :  moles of O2 = ( mass / molar mass of O2 )  moles of…

Q: Calculate the mass of scheelite (CaWO,) that contains a billion (1.0 x 10) oxygen atoms. Be sure…

A: Number of oxygen atoms = 1.0 x 109 Molar mass of CaWO4 = 287.93 g/mol 1 mol = molar mass = 6.022 x…

Q: A  penny  weighs  2.507g  and  is  made  of  an alloy which  is  97.6%  zinc  and  2.4%  copper.…

A:

Q: Gaseous butane (CH3 (CH₂)2CH3) reacts with gaseous oxygen gas (0₂) to produce gaseous carbon dioxide…

A: Butane reacts with oxygen to form carbon dioxide and water. The equation for the balanced chemical…

Q: Question 11: You are a gemstone expert studying samples of various materials. Gemstone Hambergite…

A: From the given gemstones, the most massive gemstone is = Smoky Quartz (density = 2.65 g/mL) The…

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A: Phosphoric acid reacts with ammonia to form ammonium phosphate. The equation for the balanced…

Q: O CHEMICAL REACTIONS Using molarity to find solute mass and solution volume A chemist adds 390.0 mL…

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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: Gaseous ethane (CH, CH₂) will react with gaseous oxygen (O₂) to produce gaseous carbon dioxide (CO₂)…

A:

Q: Representing Chemical Reactions For each of the following chemical reactions: Write the balanced…

A: These questions are based on balanced chemical reaction.

Q: Ammonia (NH;) chemically reacts with oxygen gas (0,) to produce nitric oxide (NO) and water (H,0).…

A: Mass of ammonia = 2.9 g  Mass of nitric oxide = ?

Q: On average, a drop of water has a volume of 50 microliters. What is this volume in dekaliters ?

A: Units are measurements of particular value.  Measurement is determining how large or small a…

Q: Liquid hexane (CH (CH,) CH,) will react with gaseous oxygen (0,) to produce gaseous carbon dioxide…

A:

Q: How many significant figures does 3.005 have?

A: Digits which are responsible for contributing the degree of accuracy of a value are called…

Q: A hollow spherical iron ball has a diameter of 15.3 cm and has a mass of 13.5 kilograms. Assuming…

A: Given: Diameter of the outer sphere = 15.3 cm Mass of sphere = 13.5 Kg = 13500 g…

Q: What is the mass, in grams, of each of the following? I.) 2.1×10−3 mol Sb Express your answer…

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.