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Activity 02: determination of the percentage by mass of nahco3
Ask: Activity 02: determination of the percentage by mass of nahco3 in alka-seltzer tablets
SOLUTION:
Step 1: Calculate the molar mass of NaHCO₃.
Note that the molar masses of Na, H, C, and O are 22.99 g, 1.008 g, 12.011 g, and 15.999 g, respectively.
[tex]begin{aligned} text{molar mass of} : text{NaHCO}_3 & = text{22.99 g + 1.008 g + 12.011 g + 3(15.999 g)} \ & = text{84.006 g} end{aligned}[/tex]
Step 2: Solve for the percentage composition of NaHCO₃.
• For Na
[tex]begin{aligned} %text{Na} & = frac{n times text{molar mass of Na}}{text{molar mass of} : text{NaHCO}_3} times 100% \ & = frac{1 times text{22.99 g}}{text{84.006 g}} times 100% \ & = boxed{27.367%} end{aligned}[/tex]
• For H
[tex]begin{aligned} %text{H} & = frac{n times text{molar mass of H}}{text{molar mass of} : text{NaHCO}_3} times 100% \ & = frac{1 times text{1.008 g}}{text{84.006 g}} times 100% \ & = boxed{1.200%} end{aligned}[/tex]
• For C
[tex]begin{aligned} %text{C} & = frac{n times text{molar mass of C}}{text{molar mass of} : text{NaHCO}_3} times 100% \ & = frac{1 times text{12.011 g}}{text{84.006 g}} times 100% \ & = boxed{14.298%} end{aligned}[/tex]
• For O
[tex]begin{aligned} %text{O} & = frac{n times text{molar mass of O}}{text{molar mass of} : text{NaHCO}_3} times 100% \ & = frac{3 times text{15.999 g}}{text{84.006 g}} times 100% \ & = boxed{57.135%} end{aligned}[/tex]
Hence, NaHCO₃ is composed of 27.367% Na, 1.200% H, 14.298% C, and 57.135% O by mass.
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Note: The value of n in the formula of percent composition is the subscript of each element in the compound. If there is no subscript, it means that the value of n is 1.
[tex]\[/tex]
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if suffering from an upset stomach,you may use remedy such
Ask: if suffering from an upset stomach,you may use remedy such as Andrews,Gaviscon,Rennie,Alka-Seltzer etc. A.salts B.painkillers C.bases D.acids
Answer:
The answer D. Acids
Explanation:
I hope it helps :/
What is seltzer in food science?
Ask: What is seltzer in food science?
Answer:
Seltzer is carbonated water
Explanation:
It is water containing dissolved CO2, either injected under pressure or produced by natural geological processes
Answer:
Yes, it’s all about the bubbles. When used in cooking and baking, these bubbles create pockets of air that expand when heated, which results in foods feeling lighter and airier
Grinding a seltzer tablet into powder increases the rate of
Ask: Grinding a seltzer tablet into powder increases the rate of reaction due to increased
pa Brainliest asnwer
Answer:
grinding a tablet into powder increases the rate of reaction by increasing the surface area.
Explanation:
The surface area of the reactant is directly proportional to the rate of the chemical reaction.Ap
what is kind of liquid material can dissolve in alka
Ask: what is kind of liquid material can dissolve in alka seltzer?
Answer:
The Alka-Seltzer tablet was dissolved in three different liquids Sprite, water, or vinegar; the results showed that the Alka-Seltzer tablet dissolved the fastest in water and the slowest in Sprite.
CORRECT ME IF I’M WRONG:)
what happened when you placed the Alka Seltzer into the
Ask: what happened when you placed the Alka Seltzer into the glass containing oil, water, and food coloring?
Answer:
Oil floats on the surface because water is heavier than oil. … The Alka-Seltzer tablet reacts with the water to make carbon dioxide gas. These bubbles attach themselves to the colored water and cause them to float to the surface. When the bubbles pop, the color sinks back to the bottom of the bottle.
What is the chemical composition of alka seltzer?
Ask: What is the chemical composition of alka seltzer?
C16H17NaO14 is the chemical formula of alka zeltzer therefor it is composed of 16 atoms of carbon, 17 atoms hydrogen, 1 atom of sodium and 14 atoms of oxygen
when a gas solute combined with a gas solvent the
Ask: when a gas solute combined with a gas solvent the resulting product is a gaseous solution which of the following is an example of said solution
A. air(oxygen in nitrogen
B. alka-seltzer
C. charcoal
D. water vapor
Answer:
D.water vapor
Explanation:
KASE YON ANG ALAM KO
Table 1. Effect of Size or Surface Area on Reaction
Ask: Table 1. Effect of Size or Surface Area on Reaction Rate
Effect of Particle Size of Surface Area on Reaction Rate
Reaction Condition (in water)Reaction Rate ( Time, sec)
Whole Seltzer or Denture cleaner
(1pt)
Powderized Seltzer or Denture cleaner (1pt)
Answer:
3 po yan yung sure answer ko
Explanation:
yan po answer
What other variables might you test that would effect the
Ask: What other variables might you test that would effect the solution rate of Alka-Seltzer®
Answer:
Alka Seltzer Dissolving at Different Temperatures
Complete reaction will finish faster. * The more amount of water used as we increase the temperature, the quicker the tablets will dissolve because there will be more water particles to collide with. So the rate increases.
Not only you can get the answer of what is hard seltzer, you could also find the answers of what is kind, if suffering from, What is the, Activity 02: determination, and Table 1. Effect.
