Questions in Chemistry

Which lightens stains better vinegar or lemon juice science project

Asked by admin @ in Chemistry viewed by 365 persons

What lightens stains better vinegar or lemon juice also what is the hypothesis for it

How many meters per second is the speed of light

Asked by admin @ in Chemistry viewed by 231 persons

The speed of light is 1.86×10^5 miles per second.how many meters will light travel in 1.0 seconds

What is the molar mass of iron ii sulfate feso4

Asked by admin @ in Chemistry viewed by 233 persons

What mass of FeSO4^2- x 6H20 (Molar Mass=260g/mol) is required to produce 500 mL of a .10M iron (II) sulfate solution. A.) 9g B.) 13g C.) 36g D.) 72g

Combustion of gasoline in a car engine exothermic or endothermic

Asked by admin @ in Chemistry viewed by 178 persons

The burning of gasoline in an automobile engine is an example of a(n) _____. Select one: a. reversible reaction b. photosynthesis reaction c. endothermic reaction d. exothermic reaction

An acid that ionizes almost completely in solution is a

Asked by admin @ in Chemistry viewed by 173 persons

Strong acids are those that ionizes almost completely in water. to be considered a strong acid, an acid must have an acid ionization constant ka > 55. the strong acid hcl …

Isotopes of the same element have the same mass number

Asked by admin @ in Chemistry viewed by 213 persons

All isotopes of an element have the same number of neutrons. have the same number of protons. have the same atomic number. have the same mass number. have different chemical …

Which planet takes the longest time to orbit the sun

Asked by admin @ in Chemistry viewed by 204 persons

Which planet will take the longest amount of time to orbit the sun? A. Jupiter B. Mars C. Mercury D. Uranus

How many sigma and pi bonds are in this molecule

Asked by admin @ in Chemistry viewed by 215 persons

How many σ and π bonds are in this molecule? A chain of five carbon atoms. There is a double bond between the first and second carbon atoms and a …

The law of conservation of matter tells us that matter

Asked by admin @ in Chemistry viewed by 192 persons

The law of conservation of mass tells us, in part, that matter is neither created nor destroyed. How can the law of conservation of mass for a chemical reaction be …

What determines the intensity of the color of a solution

Asked by admin @ in Chemistry viewed by 179 persons

g What happens to the intensity of the solution's color as the concentration of the solute changes? The intensity of the color directly changes in response to the concentration. The …

Temperature as the average kinetic energy of a gas increases

Asked by admin @ in Chemistry viewed by 171 persons

the average kinetic energy of the particles in a gas increases as the temperature of the gas increases. explain​

The molal freezing point depression constant for water is 1.86

Asked by admin @ in Chemistry viewed by 166 persons

What is the freezing point of a 1.40 m aqueous solution of a nonvolatile un-ionized solute? (the freezing point depression constant for water is 1.86°c kg solvent/mol solute.)?

Which of the following is an electrolyte solution answers com

Asked by admin @ in Chemistry viewed by 188 persons

Which of the following is an electrolyte?

What is the mass of 1 mole of fluorine gas

Asked by admin @ in Chemistry viewed by 179 persons

Fluorine gas consists of diatomic molecules of fluorine (F2). How many molecules of fluorine are in one mole of fluorine?

One of the main disadvantages of being an endotherm is

Asked by admin @ in Chemistry viewed by 175 persons

This rabbit lives where it gets very cold in the winter. It does this easily because it is an endotherm. Being an endotherm or warm-blooded has its advantages and disadvantages. …

How many miles per second is the speed of light

Asked by admin @ in Chemistry viewed by 220 persons

The speed of light is 1.86×10^5 miles per second.how many meters will light travel in 1.0 seconds

Solve the following problems express your answers in scientific notation

Asked by admin @ in Chemistry viewed by 210 persons

4. Express the answers to the following problems in scientific notation. Hint: Use the subtraction example to solve the addition problem. A. (1.8 X 1020) X (2.5 X 10^16) C. …

How does the muscular system interact with the digestive system

Asked by admin @ in Chemistry viewed by 184 persons

How do the muscular system and digestive system relate to one another? Question 1 options: If your body needs more food, and you cannot eat. the muscular system helps the …

Arrange the following elements in order of decreasing atomic radius

Asked by admin @ in Chemistry viewed by 181 persons

Arrange the following elements in order of decreasing atomic radius: Ba, Sn, S, Pb, and As. Rank elements from largest to smallest.

Of the following which atom has the smallest atomic radius

Asked by admin @ in Chemistry viewed by 195 persons

Choose the atom that has the smallest atomic radius. Na Li K Rb

Most viewed questions in Chemistry


Discuss sn2 mechanism of methyl bromide using aqueous koh

Asked by admin @ in Chemistry viewed by 1807 persons


Comparing lactose percentage between whole milk and powdered milk

Asked by admin @ in Chemistry viewed by 1517 persons


50 examples of unbalanced chemical equations with answers

Asked by admin @ in Chemistry viewed by 1003 persons


Chromium metal is immersed in an aqueous solution of cobalt(ii) chloride.

Asked by maham237 @ in Chemistry viewed by 878 persons


If you are given the assignment to cut raw poultry

Asked by maham237 @ in Chemistry viewed by 876 persons



Prepare a chart giving detailed information of carbon compounds

Asked by admin @ in Chemistry viewed by 832 persons


Effect of succinic acid on cst of phenol water system

Asked by admin @ in Chemistry viewed by 823 persons


Cnh4 lewis structure

Asked by maham237 @ in Chemistry viewed by 776 persons


Which 1 mole sample has the least entropy

Asked by maham237 @ in Chemistry viewed by 738 persons


2 3 dihydroxypropanal

Asked by maham237 @ in Chemistry viewed by 710 persons



Select true statements about the pentose phosphate pathway

Asked by maham237 @ in Chemistry viewed by 673 persons


Crossword puzzle on carbon and its compounds class 10

Asked by admin @ in Chemistry viewed by 649 persons


Ionic bond calculator

Asked by maham237 @ in Chemistry viewed by 647 persons


Lewl letpa

Asked by maham237 @ in Chemistry viewed by 633 persons


The reaction between aluminium powder and anhydrous barium nitrate

Asked by maham237 @ in Chemistry viewed by 632 persons