Chemistry

The half-life of gold-198 is 2.7 days. Afteramount of gold-198 will remain.days, 1/4 of the original
1 Answer
PLS HELPIn the balanced equation:H3PO4(aq) + NH3(aq) X(aq) + NH4+(aq)The particle represented by X(aq) isA)H2PO4(aq)B)HPO42(aq)C)PO43(aq)D)H3PO4(aq)
1 Answer
How do American cities now protect their water resources
2 Answers
10. When the pressure on a gas inetcases three times, by how much will the volume incrcase or decrease?
1 Answer
.A pure gas that is 14.3% hydrogen and 85,7% carbon by mass has a density of 2.5 g L-' at 0C and 1 atmpressure. What is the molecular formula of the gas
1 Answer
please help me please
2 Answers
Discribe how an internal combustion engine works. What is drawback to the type of power?
1 Answer
Scoring: Your score will be based on the number of correct matches minus the number of incorrect matches. There is no penalty for missing matches. Use the References to access important values if needed for this question. Indicate whether each of the following compounds will gave an acidic, basic or neutral solution when dissolved in water. 1. ammonium bromide 2. potassium cyanide 3. sodium chloride 4. potassium iodide
1 Answer
Which is produced by nuclear fusion?A. hydrogenB. electricityC.solar radiationD. gasoline
1 Answer
Which pair of elements would combine to form an ionic compound?bsodium and calciumsodium and chlorinecarbon and oxygencarbon and sulfurd
1 Answer
What is the molariity of a 50.0 mL aqueous solution containing 10.0 grams of hydrogen peroxide, H2O2?
1 Answer
please help! BRAINLIEST to right answer
1 Answer
bases have a pH ofa. more than 7b. less than 7c. 7
2 Answers
pls help Photosynthesis is used to produce food for plants in the form of glucose. In the process, oxygen is released. As shown in the diagram, plants require water and carbon dioxide (from the air). What else is required for photosynthesis and what role does it play? A) Light is required to provide energy for photosynthesis. B) ATP is required as an energy source for photosynthesis. C) Glucose is required as an energy source for photosynthesis D) Oxygen is required to split water molecules in photosynthesis.
1 Answer
A chemist needs 2.00 liters of hydrochloric acid. How many pints is this?
2 Answers
How do you convert kilometers to grams
2 Answers
what is whether? what is climate? Does todays weather impact climate?
2 Answers
People who live in hot, dry climates often rely on _________________________ for their drinking water
2 Answers
Whats that balanced
2 Answers
a. What is the mass in grams of 4.2 mols of FeO2?
2 Answers
What element is in group 17 and period 3 of the periodic table?
2 Answers
which is correct? not sure which is right
1 Answer
If a gas occupies 22.4 L at 0.265 atm, then what will the pressure be in atmospheres if the gas occupies 35.52 L? Assume all othervariables are held constantA)0.167 atmB)0.437 atmC)0.886 atmD)149 atm
1 Answer
cis-1-Bromo-4-tert-butylcyclohexane and trans-1-bromo-4-tert-butylcyclohexane both react with sodium ethoxide in ethanol to form 4-tert-butylcyclohexene. Explain why the cis isomer reacts much more rapidly than the trans isomer. Match the words in the left column to the appropriate blanks in the sentences on the right. Make certain each sentence is complete before submitting your answer.
1 Answer