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frozen [14]
3 years ago
14

Write a procedure that you would follow to demonstrate the effect of increasingly higher concentrations of hydrochloric acid on

its rate of reaction with antacid tablets.
Chemistry
1 answer:
Hitman42 [59]3 years ago
7 0
The reaction would produce bubbles of gas.

We can prepare 3-5 test tubes of acid with increasing concentrations. Then, we add antacid tablets to each and note the time taken for the tablet to dissolve and stop producing bubbles. The lesser the time taken, the greater the rate of reaction.
You might be interested in
Part
Zielflug [23.3K]
NaOH (aq) + HCl(aq) => NaCl(aq)+ H2O(l)

Na+(aq)+ OH - (aq) + H +(aq) +Cl - (aq) + Cl- (aq)
=> Na+(aq) + Cl - (aq) + H2O(l)
H+(aq) + OH-(aq) => H2O(l)
6 0
3 years ago
in 1965, the mean price of a new car was $2,650 and the standard deviation was $1,000. In 2011, the mean was $30,500 and the sta
miss Akunina [59]

Answer:

Car were more expensive in 2011

Explanation:

Data provided in the question:

Mean price of the car in 1965 = $2,650

Standard deviation, s = $1,000

Mean price of the car in 2011 = $30,500

Standard deviation in 2011, s = $9,000

Cost in 1965 = $2,300

Cost in 2011 = $28,000

Now,

z score = [ X - mean ] ÷ s

Therefore,

In 1965

z score = [ $2,300 - $2,650] ÷ 1,000

= -0.35

In 2011

z score = [ $28,000 - $30,500 ] ÷ 9,000

= -0.278

Since,

The standard score in 2011 is higher than in 1965

Hence,

Car were more expensive in 2011

8 0
3 years ago
In examples where the volume of a system is under constant pressure, which of
grin007 [14]
Answer:

D


Explanation:


At constant volume, the heat of reaction is equal to the change in the internal energy of the system. ... Most chemical reactions occur at constant pressure, so enthalpy is more often used to measure heats of reaction than internal energy.
6 0
3 years ago
Use the electronegativities in the periodic table above to determine which bonding pair forms polar covalent bonds.
VikaD [51]
image plz i need that to answer question
3 0
3 years ago
If a 2kg bird is pushed by the wind with a force of 2N, how fast does the
balandron [24]
I’m pretty sure it’s d
6 0
3 years ago
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