Chemistry, 28.05.2020 19:00 keishlav5183
What can scientists determine by examining 1,000 year-old pollen trapped in the ground?
A. The amount of plants still alive with the same type of pollen.
B. What caused you the death of the plants and animals in an area.
C. The approximate time a specific plant went extinct.
D. What plants once lived in an area.
Answers: 3
Chemistry, 22.06.2019 12:40, whitethunder05
When 13.3 g koh is dissolved in 102.7 g of water in a coffee-cup calorimeter, the temperature rises from 21.4 °c to 31.53 °c. what is the enthalpy change per gram of koh (j/g) dissolved in the water? * take the density of water as 1.00 g/ml. * assume that the solution has a specific heat capacity of 4.18 j/g*k. enter to 1 decimal place. do not forget the appropriate sign /(+). canvas may auto-delete the (+) sign
Answers: 2
Chemistry, 23.06.2019 05:00, andrwisawesome0
Match each term to its description. match term definition excess reactant a) reactant that can produce a lesser amount of the product limiting reactant b) amount of product predicted to be produced by the given reactants theoretical yield c) reactant that can produce more of the product
Answers: 3
What can scientists determine by examining 1,000 year-old pollen trapped in the ground?
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