Answer:
2Na + Br2 = 2NaBr
Explanation:
In order to balance a chemical equation you make the make sure both sides have the same number of atoms on each side, you do this by multiplying on both sides as if it was a algebraic equation.
Na+ Br2 = NaBr
Na × 2 = Na2
Na × 2 = Na2
Br × 2 = Br2
2Na + Br2 = 2NaBr
Hope this helps.
Answer:
Accuracy of a measured value refers to how close a measurement is to the correct value. The uncertainty in a measurement is an estimate of the amount by which the measurement result may differ from this value. Precision of measured values refers to how close the agreement is between repeated measurements.
Explanation:
Answer: Limiting reactant = 3
Theoretical Yield= 1
Excess reactant=2
Explanation: The theoretical yield is the maximum possible mass of a product that can be made in a chemical reaction. It can be calculated from: the balanced chemical equation. the mass and relative formula mass of the limiting reactant , and. the relative formula mass of the product.
An excess reactant is a reactant present in an amount in excess of that required to combine with all of the limiting reactant. It follows that an excess reactant is one remaining in the reaction mixture once all the limiting reactant is consumed.
The limiting reagent is the reactant that is completely used up in a reaction, and thus determines when the reaction stops. From the reaction stoichiometry, the exact amount of reactant needed to react with another element can be calculated
1. related, not
2. how fast molecules vibrate
3. how fast molecules vibrate, the number of molecules
4. higher temperature
5. lower temperature
6. more heat
7. less heat
8. degrees
9. joules
10. expand
1. true
2. false
3. false
4. true
5. false
6. false
7. false
8. true
9. false
10. true
The moles of I2 that will form 38.58g of Ni3 is 0.147 moles
calculation
write the equation for reaction for formation of Ni3 from I2 and N2
that is 3I2 + N2 = 2NI3
find the moles of Ni3 formed = mass/molar mass
= 38.58g/ 394.71 g/mol = 0.098 moles
by use of mole ratio between I2 to NI3 which is 3 :2 the moles of I2
= 0.098 x3/2 = 0.147 moles
