Answer:
4) 2Na + Cl2 → 2NaCl
5) 2Mg + O2 → MgO
6) 2H2 + 2O2 → 2H2O
Explanation:
4) In order for it to be well balanced, yeah you've got to add 2 in front of Na before the reaction and after the reaction.
5) Add 2 in front of Mg bcuz of the same reason in number 4 but you don't have to add 2 in front of the others bcuz it's alrd well balanced.
6) Tbh for this one, it got me staring at my cat until he freaks out but like yeahh, I tried :')
Answer:
It is extremely dangerous. It does not provide very much refined Metal. It generates a great deal of waste.
Explanation: Very harmful.
The smaller the atomic radius in an element, the more ionization energy it will have. So when you go across the periodic table, the IE will decrease.
Answer:
Protons
Explanation:
Typically protons cannot be removed from the atom. Removing protons from an atom will completely change the atom as it will become another element entirely.
In an atom, protons are held by strong nuclear forces.
- Within an atom, protons are the positively charged particles.
- Together with the neutrons, they are found in the nucleus of an atom.
- The number of protons within an atom is the atomic number of the atoms and it determines the nature and type of atom it is.
- Protons cannot be removed from an atom due to the strong binding force holding them together in place.
Answer:
B) 12.9 grams.
Explanation:
How many moles of molecules in that 6.30 L of H₂?
The volume of one mole of an ideal gas at STP (0 °C, 1 atm) is 22.4 liters.
(The volume of that one mole of gas at STP will be 22.7 liters if STP is defined as 0 °C and 10⁵ Pa).
.
How many moles of Na will be needed?
The coefficient in front of Na in the equation is twice the coefficient in front of H₂. It takes two moles of Na to produce one mole of H₂.
.
What's the mass of that many Na atoms?
Refer to a modern periodic table. The molar mass of ₁₁Na is 22.990. The mass of one mole of Na atoms is 22.990 gram. The mass of 0.5625 moles of Na atoms will be
.
(2 sig. fig. as in the volume of the H₂ gas.)
