Chemistry

The half-life of 131I is 0.220 years. How much of a 500.0 mg sample remains after 24 hours? A) ...

Started by WWatsford

Which one of the following complexes can exhibit geometrical isomerism? A) Pt(NH3)2Cl2 (square ...

Started by Cooldude101

A temperature of 98.6F is the same as A. 212C. B. 100C. C. 37C. D. ...

Started by Yolanda

A lungful of air (500 mL) contains 4.1 CO2 by volume. How many grams of KO2(s) is needed to remove ...

Started by jjjetplane

The density of nitric oxide (NO) gas at 0.970 atm and 34.9 C is ________ g/L. A) 0.0384 B) 0.869 ...

Started by burchfield96

On the absolute temperature scale, temperatures are reported in A. degrees Celsius. B. degrees ...

Started by Alainaaa8

The density of chlorine gas at 1.01 atm and 54.1 C is ________ g/L. A) 0.0376 B) 0.375 C) 0.228 ...

Started by mydiamond

A solution containing 10.0 g of an unknown liquid and 90.0 g water has a freezing point of -3.33 C. ...

Started by clippers!

The half-life of 222Rn is 3.80 days. If a sample contains 36.0 g of Rn-222, how many years will it ...

Started by kaid0807

What should you do if a chemical is spilled on your skin? A) wash immediately with water B) ask ...

Started by madam-professor

The density of ________ is 1.70 g/L at STP. A) F2 B) NO C) CH4 D) Ne E) ...

Started by Coya19@aol.com

A titration reached the equivalence point when 16.1 mL of 0.209 M H2SO4 (aq) was added to 12.0 mL of ...

Started by WWatsford

The battery used to start a car is an example of which of the following? A. Electrical energy is ...

Started by Caiter2013

Calcium phosphate reacts with sulfuric acid to form calcium sulfate and phosphoric acid. What is the ...

Started by colton

How many liters of SO3(g) are produced at 25C and 1.00 atm from the combustion of 1.00 kg of coal ...

Started by Tirant22

A complex that absorbs light at 700 nm will appear ________. A) red B) green C) yellow D) ...

Started by silviawilliams41

The solvent in an aqueous solution is ________. Fill in the blank(s) with correct ...

Started by jerry coleman

The density of NO2 in a 4.77 L tank at 738.4 torr and 45.0 C is ________ g/L. A) 1.71 B) 1300 ...

Started by cnetterville

A metal complex absorbs light mainly at 420 nm. What is the color of the complex? A) green B) ...

Started by Arii_bell

Calculate the concentration (M) of arsenic acid (H3AsO4 ) in a solution if 25.00 mL of that solution ...

Started by stevenposner

What is the proper technique for detecting the odor of a vapor in a test tube? A) breathe deeply ...

Started by mckennatimberlake

The density (in g/L) of CO2 at 1106.2 torr and 56.3 C is ________. A) 2.37 B) 1800 C) 13.9 D) ...

Started by pepyto

How many moles of BaCl2 are formed in the neutralization of 393 mL of 0.171 M Ba(OH)2 with aqueous ...

Started by Pineapplelove6

What is the term for the procedure of collecting data and recording observations under controlled ...

Started by Davideckstein7

Of the following gases, ________ has density of 0.906 g/L at 315 K and 1.16 atm. A) Ne B) Ar C) ...

Started by ap345