![subject](/tpl/images/cats/himiya.png)
Chemistry, 13.01.2020 21:31 lizzyhearts
If a penny is made of 3.11 grams of copper, how many atoms of copper are in the penny
![ansver](/tpl/images/cats/User.png)
Answers: 3
Another question on Chemistry
![question](/tpl/images/cats/himiya.png)
Chemistry, 22.06.2019 04:30
Which is a chemical property of iron? a. it forms iron oxide (rust) when exposed to moisture and air. b. it is a gray–black metal that is hard to the touch. c. it has a melting point of 2795°f (1536°c). d. it is a good conductor of heat
Answers: 2
![question](/tpl/images/cats/himiya.png)
Chemistry, 22.06.2019 10:30
Great amounts of electromagnetic energy from our sun and other bodies in space travel through space. which is a logical conclusion about these electromagnetic waves? their energy must be very their frequency must be very low these waves can travel without a medium they only travel through a vacuum of space
Answers: 2
![question](/tpl/images/cats/himiya.png)
Chemistry, 22.06.2019 22:10
Which aqueous solution of ki freezes at the lowest temperature? 1) 1 mol of ki in 500. g of water 2) 2 mol of ki in 500. g of water 3) 1 mol of ki in 1000. g of water 4) 2 mol of ki in 1000. g of water
Answers: 3
![question](/tpl/images/cats/himiya.png)
Chemistry, 23.06.2019 03:00
What volume does 1.70 ×10–3 mol of chlorine gas occupy if its temperature is 20.2 °c and its pressure is 795 mm hg?
Answers: 3
You know the right answer?
If a penny is made of 3.11 grams of copper, how many atoms of copper are in the penny...
Questions
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 05.05.2020 17:33
![question](/tpl/images/cats/mat.png)
Mathematics, 05.05.2020 17:33
![question](/tpl/images/cats/fizika.png)
Physics, 05.05.2020 17:33
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 05.05.2020 17:33
![question](/tpl/images/cats/biologiya.png)
Biology, 05.05.2020 17:33
![question](/tpl/images/cats/istoriya.png)
History, 05.05.2020 17:33
![question](/tpl/images/cats/mat.png)
Mathematics, 05.05.2020 17:33
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 05.05.2020 17:33
![question](/tpl/images/cats/biologiya.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 05.05.2020 17:33
![question](/tpl/images/cats/mat.png)
Mathematics, 05.05.2020 17:33
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/ekonomika.png)
![question](/tpl/images/cats/User.png)