If the density of an ideal gas at stp if found to be 0.0902 g/l, what is its molar mass?

What are the five major changes in state? (science question)

Calculate the activation energy (ea in kj/mol for a reaction if the rate constant (k is 2.7 * 10-4 (m-1sec-1 at 600 k and 3.5 * 10-3 (m-1sec-1 at 650 k.

Naturally occurring silver has two isotopes. isotope a has a relative mass of 106.9051 and an abundancy 51.82%. isotope b has a relative mass of 108.9047. calculate the atomic mass of silver from these data

Which of these represents a chemical change?

The data below were collected for the following reaction at 500 ∘C: CH3CN (g) →CH3NC (g) Time (h) [CH3CN] (M) 0.0 1.000 5.0 0.794 10.0 0.631 15.0 0.501 20.0 0.398 25.0 0.

When table salt is placed in water and stirred it dissolves and a clear liquid is obtained. This process is a

Carbonic acid is generated by bubbling co2 into a beaker of water. If it took 5 minutes for this reaction to reach equilibrium, how would the results differ if the enzyme carbonic anhydrase was added to the beaker of water?

Part a which element can expand its valence shell to accommodate more than eight electrons? which element can expand its valence shell to accommodate more than eight electrons? he h f b s

What are some reasons why the research should be put through a peer-review process?

what are scientists who study fossils called? (a) astronomers. (b) biologists. (c) geologists. (d) paleontologists.