Hydrogen is a liquid below what temperature?

a.

100 degrees C

c.

-183 degrees C

b.

-253 degrees C

d.

0 degrees C

Which state of matter has a definate volume but a variable shape. solid, liquid, gas, vapor, gas

Which compound contains ionic bonds? A. NaBr (s) B. HBr (g) C. CH220 (s) D. CO2 (g)

What are the two properties of carbon which lead to the huge number of carbon compounds we see around us?

Balance these scientific equations: MgO + HB - > MgBr2 + H2O N2 + O2 - > N2O5 C2H4 + O2 - > CO2 + H2O Fe + HCI - > FeCl2 + H2

The granite rock shown above is an example of a. element b. a compound c. homogeneous mixture d. heterogeneous mixture

How Fast Do Different Parts Of The EM Spectrum Travel In A Vacuum?

Why is haemoglobin a pure substance

The measurement of how fast an object moves over a certain amount of time. A:Velocity B:Speed C:Acceleration D:Displacement

At 25C, K = 0.090 for the reaction:H2O (g) + Cl2O (g) 2HOCl (g) Calculate the concentrations of all species at equilibrium for eachof the following cases: (a) 1.0g H2O and 2.0g Cl2O are mixed in a1.0-L flask. (b) 1.0 mol pure HOCl is placed in a 2.

Which of the following is the largest volume? 1.2 x 101 m3 1.2 x 108 cm3 2.0 x 104 dm3 1.2 x 108 mm3