Question 11
The Pliocene Epoch is when our species, Homo sapiens first evolved.
True
Fa...
![subject](/tpl/images/cats/himiya.png)
Chemistry, 16.07.2020 20:01 jimarieb08
Question 11
The Pliocene Epoch is when our species, Homo sapiens first evolved.
True
False
![ansver](/tpl/images/cats/User.png)
Answers: 2
![](/tpl/images/ask_question.png)
![](/tpl/images/ask_question_mob.png)
Another question on Chemistry
![question](/tpl/images/cats/himiya.png)
Chemistry, 22.06.2019 08:00
Nconcentration refers to the molar concentration of an ion in solution. it may be identical to, or greater or less than, the molar concentration of the compound containing the ion that was used to make the solution. for soluble salts, the molarity of a particular ion is equal to the molarity of that compound times the subscript for that ion. for example, 1 m of alcl3 is 1 m in al3+ and 3 m in cl−. 1 m of (nh4)2so4 is 2 m in nh4+ and 1 m in so42−. part a what is the concentration of k+ in 0.15 m of k2s? view available hint(s) nothing m m part b if cacl2 is dissolved in water, what can be said about the concentration of the ca2+ ion? view available hint(s) if is dissolved in water, what can be said about the concentration of the ion? it has the same concentration as the cl− ion. its concentration is half that of the cl− ion. its concentration is twice that of the cl− ion. its concentration is one-third that of the cl− ion. part c a scientist wants to make a solution of tribasic sodium phosphate, na3po4, for a laboratory experiment. how many grams of na3po4 will be needed to produce 550 ml of a solution that has a concentration of na+ ions of 0.700 m ? express your answer numerically in grams. view available hint(s) mass of na3po4 n a 3 p o 4 = nothing g provide feedback
Answers: 3
![question](/tpl/images/cats/himiya.png)
Chemistry, 22.06.2019 10:30
Asample of air with a volume of 2.20m3 at a pressure of 105 kpa and a temperature of 30c is cooled to 10c and the pressure is reduced to 75.0 kpa. what is the new volume? 6.9 1.34 2.56 43.0 2.88
Answers: 1
![question](/tpl/images/cats/himiya.png)
Chemistry, 23.06.2019 05:30
Idont understand it 1.what is the boiling point of a solution of 675 grams of ethylene glycol (c2h6o2) in 2.50 liters of water?
Answers: 2
![question](/tpl/images/cats/himiya.png)
Chemistry, 23.06.2019 06:20
Type the correct answer in each box.balance the chemical equation.__ n203 ➡️ __ n2 +__ o2
Answers: 1
You know the right answer?
Questions
![question](/tpl/images/cats/himiya.png)
Chemistry, 28.08.2019 18:00
![question](/tpl/images/cats/en.png)
English, 28.08.2019 18:00
![question](/tpl/images/cats/en.png)
English, 28.08.2019 18:00
![question](/tpl/images/cats/health.png)
Health, 28.08.2019 18:00
![question](/tpl/images/cats/mat.png)
Mathematics, 28.08.2019 18:00
![question](/tpl/images/cats/istoriya.png)
History, 28.08.2019 18:00
![question](/tpl/images/cats/biologiya.png)
Biology, 28.08.2019 18:00
![question](/tpl/images/cats/istoriya.png)
History, 28.08.2019 18:00
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/health.png)
Health, 28.08.2019 18:00
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 28.08.2019 18:00
![question](/tpl/images/cats/biologiya.png)
![question](/tpl/images/cats/obshestvoznanie.png)
Social Studies, 28.08.2019 18:00
![question](/tpl/images/cats/obshestvoznanie.png)
![question](/tpl/images/cats/himiya.png)
![question](/tpl/images/cats/health.png)
![question](/tpl/images/cats/mat.png)