Tema
Q:
\( t(\sqrt{ } \) ) or \( (x) \) and correct the wrong one :-
1- Alkali metals gives during chemical reactions positive ions carry one positive charge
Q:
4. A sample of oxygen is collected over water at \( 25.0^{\circ} \mathrm{C} \). The barometric pressure is 717.0 mmHg . What
is the pressure of the oxygen gas in atm?
\( (0.9121 \mathrm{~atm}) \)
Q:
When do I use this formula \( \rightarrow \mathrm{n}=\frac{\mathrm{N}}{\mathrm{N}_{\mathrm{A}}} \)
Example: How many oxygen atoms are there in 10 g of \( \mathrm{MgSO}_{2} \)
Q:
C) \( \mathrm{C}_{6} \mathrm{H}_{12} \mathrm{O}_{6} \rightarrow \mathrm{C}_{2} \mathrm{H}_{0} \mathrm{O}+\mathrm{CO}_{2} \mathrm{H}=2 \mathrm{CL}=1 \mathrm{Na}= \)
D) \( \mathrm{C}_{4} \mathrm{H}_{10}+\mathrm{O}_{2} \quad \rightarrow \mathrm{CO}_{2}+\mathrm{H}_{2} \mathrm{O} \)
E) \( \mathrm{FeCl}_{3}+\mathrm{Na}_{2} \mathrm{CO}_{3} \rightarrow \mathrm{Fe}_{2}\left(\mathrm{CO}_{3}\right)_{3}+\mathrm{NaCl} \)
Q:
Using the same balanced equation from 1 a . above, calculate the mass of sodium chloride that
would also be produced with the 4.751 g of carbon dioxide.
(12.62 g)
Q:
mores y sodilem chunde are protuced.
Use the balanced equation from 1a. above to calculate how many grams of sodium carbonate
would have to react in order to produce 4.751 g of carbon dioxide.
Q:
Write the balanced chemical equation (with state descriptors) for the reaction between sodium
carbonate and hydrochloric acid.
What is the molar ratio of sodium chloride to sodium carbonate according to the balanced
Describe how your experimental molar ratio in Calculation 1 h . compares to the above ratio from
the balanced chemical equation.
Q:
What is the mass of 0.00830 moles of carbon dioxide?
Q:
Convert 2.654 g sodium bicarbonate to moles.
Q:
Convert 1.732 g of sodium carbonate to moles.
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