Chemistry Questions

On a mission to a newly discovered planet, an astronaut finds copper abundances of 69.97 % for 63Cu and 31.03 % for 65Cu. What is the atomic mass of copper for this location? The mass of 63Cu is 62.9300 amu . The mass of 65Cu is 64.9200 amu . Express your answer to two decimal places, and include the appropriate units.
1 Answers
How many moles of carbon are produced when 1745 g of glucose decomposes according to the following equation? C6H12O6 → 6C 6H2O
1 Answers
What scientists do that is the basis for their investigations
1 Answers
Which organic molecule is digested into simple sugar?
1 Answers
Which organic molecule is digested into simple sugar?
1 Answers
Cemistry counting atoms in compounds worksheet#7.0.1
1 Answers
If someone tells me that scientific knowledge cannot be changed or modified how would I answer that statement
2 Answers
You've just solved a problem and the answer is the mass of an electron, me=9.11×10−31kilograms. How would you enter this number into the answer box?
1 Answers
A block of wood has a mass of 120g and a volume of 200cm what is the density
2 Answers
What element has 25 protons?
2 Answers
the atomic number of barium is 56 what do you know about the subatomic particles in an atom of this element
2 Answers
Which of the following uses a nonrenewable energy resource to generate energy? A. nuclear power plant B. wind farm C. fireplace that burns wood D. biomass power plant
1 Answers
If the acetylene tank contains 37.0 mol of C2H2 and the oxygen tank contains 81.0 mol of O2, what is the limiting reactant for this reaction?
2 Answers
When sodium metal is added to water, an orange flame is observed on the metal surface. Based on this observation, what can best be concluded
2 Answers
Classical biotechnology dates back about _____ years ago. A.100B.1,000C.10,000D.100,000
1 Answers
The _______ receives digested food components and stores the glucose to be released into the blood stream for future use.A. liver B. stomach C. small intestine D. large intestine
1 Answers
Which professional is most likely to suffer damage from lead contamination?A. doctorB. farmerC. painterD. carpenter
2 Answers
The digestion process starts in the _____. esophagus stomach small intestine mouth
1 Answers