What are food preservatives? Name two such substances.

Q: why does gas take both the shape and volume of its container?

A: Gas particle are in constant  motion ,colliding with each other and with the walls of the container....

Q: Calculate the lattice energy for CsCl using a Born-Haber cycle. Also calculate the approximate latti...

A: Lattice energy is defined as the energy released when a compound is formed from its gaseous ions. Th...

Q: 16

A:

Q: Part A 13 How many moles of atoms are in 6.00 g of C? Express your answer numerically in moles. • Vi...

A: Given : Mass of 13C = 6.00 g  

Q: Which of the following matches the given data?

A: Data of 1 H nmr is given as : A molecule give these signals -4.2 (q, 2 H) ,1.3 (s, 9 H) , 1.1(t, 3 H...

Q: 9

A: Mole=molarity×volume Molarity= 0.6189M Volume=20L Mole=0.6189×20=12.37mole

Q: Predict the products of the following reaction and balance the equation: HCl(aq) + AgNO3 (aq) →   Pr...

A:

Q: Write the balanced COMPLETE ionic equation for the reaction when KI and AgNO₃ are mixed in aqueous s...

A: The ionic equation represents the dissociated ions.

Q: BEI Ho Exp

A: Mole is defined for the quantity of substance.  

Q: Answer e,f,g

A: E) Z11 means collsion frequency  More molar mass less collsion frequency So H2 have high Z11 F) dens...

Q: The energies, ? , for the first few states of an unknown element are given in the table in arbitrary...

A: The given value of n and Energies are: n 1 2 3 4 infinity Energy -84 -36 -16...

Q: The density of benzene at 15 ∘C is 0.8787 g/mL. Calculate the mass of 0.1800 L of benzene at this te...

A: Mass = Volume x density  Given that: Density of benzene = 0.8787 g/mL Volume of benzene = 0.1800 L =...

Q: Identify each reactant as an acid or a base, then draw the products that result from the provided ar...

A: Acid: A substance which has the tendency to donate proton Base:  A substance which has the tendency ...

Q: What is happening at the particle level when energy is being transferred between two objects?

A: Heat is flow frommhight temperature to low temperature

Q: An unbalanced force of 45 N is applied to a mass 7.3 kg. What will be the resulting acceleration in ...

A: According to definition of applied force - It is given as product of mass and the acceleration cause...

Q: Which subatomic particles have a negative charge?

A: A typical atom consists of three subatomic particles: protons, neutrons, and electrons. Protons and ...

Q: A student has a sample of CaSO4 hydrate and it weighs 0.4813 grams. He heats it strongly to drive of...

A: Given: mass of CaSO4 hydrate = 0.4813 g mass of anhydrous CaSO4 = 0.3750 g      

Q: Calculate the percent composition by mass of each element in Al(OH),. Use at least three significant...

A: The compound given is Al(OH)3  Assuming 1 mole of Al(OH)3  Molar mass of Al(OH)3 = Atomic mass of Al...

Q: Choose the most appropriate systematic (IUPAC) name from the choices below that accurately describes...

A: B is the correct option  CH3 and OH are opposite side so they are anti position  Name will be trans-...

Q: What is the purpose of a titration? How is it performed (in general)?

A:  

Q: A student is given 1.5621 g of pure CuO. To recover the Cu present in the compound, the dark powdery...

A: The balanced reaction taking place is given as, => Mg (s) + Cu2+ (aq) ------> Cu (s) + Mg2+ (a...

Q: Write a balanced chemical equation based on the following description: gaseous nitrogen and hydrogen...

A: Balance Chemical equation means no of atoms should be equaal in both side reactant and product

Q: The density of titanium metal is 4.51 g/cm3 at 25 CWhat mass of titanium displaces 69.2 mL of water ...

A:

Q: 2. In which solution do you expect benzoic acid (an acid) to best dissolve: water, aqueous acid, or ...

A: Benzoic acid will dissolve more in aqueous base beacuse it can react with base because itself is a s...

Q: What is the empirical formula of a compound composed of 23.5 g of potassium (K) and 4.81 g of oxygen...

A:

Q: Anthracite is a type of coal that is composed of carbon with small amounts of hydrogen, oxygen, nitr...

A:

Q: Please answer all questions I'll give you like upvote

A: We know that, pH is the negative logarithm of hydronium ion concentration. i.e.,                    ...

Q: Exothermic Changes: the system by the surroundings the surroundings. The heat the freedom of motion ...

A: Exothermic changes The system looses heat to the surrounding.the heat gain by the surrounding decrea...

Q: What is the mole ratio ofthiosulfate (S2O32–) to peroxodisulfate ions (S2O82–)reacted in the net rea...

A: Write the balanced net ionic equation between thiosulfate ion S2O32- and peroxodisulfate ion S2O82-....

Q: Gaseous ethane CH3CH3 reacts with gaseous oxygen gas O2 to produce gaseous carbon dioxide CO2 and ga...

A:

Q: Question 2

A:

Q: Chemistry Question

A: Calculate mole of each by dividing molar mass to mass Then divide  by least number to all the moles ...

Q: At 25 C the vapor pressures of benzene (C6H6) and toluene (C7H8) are 93.4 and 26.9 torr, respectivel...

A: given: vapor pressure of benzene P°A = 93.4 torr vapor pressure of toluene P°B = 26.9 torr mass of b...

Q: write the product of the D-gulose reaction by: a. CH3I, Ag2O b. The product in (a), then H3O+  c. Th...

A: Number of functional group is associated with organic compounds which impart specific chemical and p...

Q: Determine the molarity of each of the following solutions from its osmotic pressure at 25°C. Include...

A: Write the expression for osmotic pressure. π=CRT Where π is the osmotic pressure. C is the molarity ...

Q: Which piece of glassware should you use to make a solution of a specific volume and concentration?

A: Given : To make a solution of specific volume and concentration.  

Q: Consider the tetrasaccharide stachyose drawn below. Stachyose is found in white jasmine,soybeans, an...

A: a. b.

Q: Draw the structure for 2-ethylcyclopentanecarbaldehyde :

A: The Structure of 2-ethylcyclopentanecarbaldehyde is given as: 

Q: Complete the balanced dissociation equation for the compound below in aqueous solution. If the compo...

A: The balanced dissociation equation for the compound below in aqueous solution

Q: Which of the following factors (maybe more than one) contributes to high viscosity for a liquid? low...

A: Viscosity is the opposing force that acts on the liquids. It opposes the flow of the fluids. The fac...

Q: An automobile travels 83.0 km on 8.63 LL of gasoline. What is the gas mileage for the automobile in ...

A: The distance travelled can be expressed in different units which are kilometers and miles.  The auto...

Q: Complete the balanced molecular chemical equation for the reaction below. If no reaction occurs, wri...

A: The reaction is as given below: 

Q: Which subatomic particles have a negative charge?

A:

Q: The energies, ? , for the first few states of an unknown element are given in the table in arbitrary...

A: The final energy of electron is the sum of energy in the atom and the energy in the photon and its e...

Environmental Pollution

Environmental pollution occurs due to some unwanted alteration in the surroundings which results in unfavorable effects on all organisms of that surrounding.