Chemistry, 06.06.2020 13:58 EdgeTheWizard
1. Define polyatomic ion. Give one example.
2. What is formula unit of mass? How is it different from molecular mass?
3. What is Law of conservation of mass and Law of constant proportions?
4. What is an ion? Explain the types of ion with examples.
5. Find the molecular mass of H2O.
6. Define the term valency. What is the valency for magnesium and copper?
7. What is the difference between cation and anion?
8. What is atomicity? What is the atomicity of phosphorus and nitrogen?
9. Find the number of atoms in 0.5 mole of C atom.
10. Find the mass of 1.5 mole of CO2 molecule.
11. Calculate the formula unit mass of NaCl and CaCl2.
12. What is the difference between molecules 2O and O2?
Answers: 3
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There are main groups in the modern periodic table of elements
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Chemistry, 22.06.2019 02:50
Consider the equilibrium system: 2icl(s) ⇄ i2(s) + cl2(g) which of the following changes will increase the total amount of of cl2 that can be produced? all of the listed answers are correct decreasing the volume of the container removing the cl2 as it is formed adding more icl(s) removing some of the i2(s)
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Chemistry, 22.06.2019 05:00
If the density of water is 1.0 g/cm3, which of these materials would float in water, based on their densities? check all that apply. aluminum cork iron lead wax
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Chemistry, 22.06.2019 13:40
Can someone me with 6 to 10 plz this is for masteries test.
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1. Define polyatomic ion. Give one example.
2. What is formula unit of mass? How is it different fr...
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