Chemistry » Page 53

Chemistry

Rowan Newman

How is a circle different from an ellipse

Answer Answers (1)

Chemistry

Helena

How many grams of fe (no3) 3 · 9 h2o are required to prepare 350.0 ml of a 0.311 m solution of fe (no3) 3 · 9 h2o?

Answer Answers (1)

Chemistry

Jakobe Copeland

What is a valid reason why a scientist might reject a scientific theory

Answer Answers (2)

Chemistry

Cherish

Which of the following is a benefit associated with nuclear energy?

Answer Answers (1)

Chemistry

Asher Baird

Which three elements have strong magnetic properties?

A.

boron, carbon, and silicon

B.

lithium, sodium, and potassium

C.

iron, cobalt, and nickel

D.

neon, argon, and krypton

Answer Answers (1)

Chemistry

Kash

What are the spectator ions in the solution after the precipitation of an insoluble sulfate compound from AgNO3 (aq) and K2SO4 (aq) ?

Answer Answers (1)

Chemistry

Kali Baker

How are chemical formulas of binary ionic compounds generally written? a cation on left, anion on right b anion on left, cation on right c roman numeral first, then anion, then cation d subscripts first, then ions?

Answer Answers (1)

Chemistry

Amara Holden

Given a fixed amount of gas held at constant pressure, calculate the volume (in L) it would occupy if a 3.50 L sample were cooled from 90.0oC to 30.0oC.

Answer Answers (1)

Chemistry

Terrell Jarvis

Which of the following is not required for osmosis to occur?

View Available Hint (s)

Which of the following is not required for osmosis to occur?

selectively permeable membrane

water

concentration gradient

cellular energy

Answer Answers (1)

Chemistry

Skylar Mahoney

The volume of 1 mole of o2 gas at T=273k P=1atm is?

A 6.02 x 10^-23 ml

B 760 L

C 22.4 L

D 2.24 L

E 224 L

Answer Answers (2)

Chemistry

Madison Bright

There are two stable isotopes of bromine. Their masses are 78.9183 and 80.9163 amu. If the average atomic mass of bromine is 79.9091 amu, what is the natural abundance of the heavier isotope? percent abundance of 81Br __%

Answer Answers (1)

Chemistry

Evelyn Frey

If 1.00 mol of argon is placed in a 0.500-L container at 20.0 ∘C, what is the difference between the ideal pressure (as predicted by the ideal gas law) and the real pressure (as predicted by the van der Waals equation) ?

For argon, a=1.345 (L2⋅atm) / mol2 and b=0.03219L/mol.

Answer Answers (1)

Chemistry

Adriel Lloyd

Which of these is a covalent compound?

1. AICI3

2. CO

3. MgO

4. LiCI

Answer Answers (1)

Chemistry

Joanna Walsh

What is a protein used for

Answer Answers (1)

Chemistry

Deven Ward

Atoms of the halogen family typically steal two electrons from other atoms when they react true or false

Answer Answers (1)