subject
Chemistry, 04.02.2020 12:52 earthangel456

Sponch, a memory key for the important elements in living things stands for? a. selenium, potassium, oxygen, nitrogen, calcium, and hydrogen. b. sulfur, phosphorus, oxygen, nitrogen, carbon, and hydrogen. c. sulfur, potassium, oxygen, nitrogen, carbon, and hydrogen. d. selenium, phosphorus, osmium, nitrogen, calcium, and helium.

ansver
Answers: 2

Another question on Chemistry

question
Chemistry, 23.06.2019 13:00
How many grams of oxygen gas will react completely with a block of calcium metal that is 3.0 cm by 3.5 cm by 4.2 cm, if the density of calcium is 1.55 g/ml? show all steps of your calculation as well as the final answer.
Answers: 3
question
Chemistry, 23.06.2019 20:50
The temperature of a substance is a measure of the 1. average kinetic energy of its particles 2. average potential energy of its particles 3. ionization energy of its particles 4. activation energy of its particles
Answers: 1
question
Chemistry, 23.06.2019 21:30
What types of energy do not contribute to climate change?
Answers: 1
question
Chemistry, 23.06.2019 22:30
What is the thermodynamic driving force for dissolving a solid in a liquid if it is an endothermic process (which reduces the entropy of the surroundings)? 1. the combustion of propane. 2. the increase of the entropy of the system. 3. increased temperature of the system and surroundings. 4. the decrease of the entropy of the system. 5. the increase or decrease of the entropy of the system?
Answers: 1
You know the right answer?
Sponch, a memory key for the important elements in living things stands for? a. selenium, potassium...
Questions
question
Mathematics, 03.01.2020 03:31
question
Mathematics, 03.01.2020 03:31