1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
lana66690 [7]
3 years ago
13

What does a triple beam balance measure?

Chemistry
2 answers:
polet [3.4K]3 years ago
7 0

Answer:

0.05 grams. Hope this helps! :)

Explanation:

Inessa05 [86]3 years ago
5 0
The triple beam balance<span> is used to </span>measure<span> masses very precisely; the reading error is 0.05 gram.</span>
You might be interested in
Which statement is true about the particles of a solid when the solid
ira [324]

Answer:

2) Their kinetic energy increases.

Explanation:

The particles have more kinetic energy because they move around more when they are a liquid.

6 0
3 years ago
Read 2 more answers
In an acid-base titration experiment, 50 mL of a 0.05 M solution of acetic acid (Ka= 1.75 x 10-5 ) was titrated with a 0.05M sol
Viktor [21]

Answer:

(3) 5.36

Explanation:

Since this is a titration of a weak acid before reaching equivalence point, we will have effectively a buffer solution. Then we can use the Henderson-Hasselbalch equation to answer this question.

The reaction is:

HAc + NaOH ⇒ NaAc + H₂O

V NaOH = 40 mL x 1 L/1000 mL = 0.040 L

mol NaOH reacted with HAc = 0.040 L x 0.05 mol/L = 0.002 mol

mol HAC originally present = 0.050 L x 0.05 mol/L = 0.0025 mol

mol HAc left after reaction = 0.0025 - 0.002 = 0.0005

Now that we have calculated the quantities of the weak acid and its conjugate base in the buffer, we just plug the values into the equation

pH = pKa + log ((Ac⁻)/(HAc))

(Notice we do not have to calculate the molarities of  Ac⁻ and HAc because the volumes cancel in the quotient)

pH = -log (1.75 x 10⁻⁵) + log (0.002/0.0005) = 5.36

THe answer is 5.36

5 0
3 years ago
Read 2 more answers
Which of the following statements is true??
iren [92.7K]
Tsunamis are caused by seismic waves
8 0
3 years ago
In going from room temperature 25° to 35 the rate of a reaction doubles calculate the activation energy for the reaction
Pepsi [2]

Answer:

52.9 KJmol-1

Explanation:

From;

log(k2/k1) = Ea/2.303 * R (1/T1 - 1/T2)

The temperatures must be converted to Kelvin;

T1 = 25° C + 273 = 298 K

T2= 35°C + 273 = 308 K

R= gas constant = 8.314 JK-1mol-1

Substituting values;

log 2 = Ea/2.303 * 8.314 (1/298 - 1/308)

Ea = 52.9 KJmol-1

4 0
3 years ago
For the reaction, X + Y → A + B, ΔGo is –1324 kJ. Which one of the following statements is NOT valid concerning the reaction?
natima [27]

Answer:

c. The reaction will proceed rapidly from left to right.

Explanation:

The variation of the free Gibbs energy doesn't tell anything about the speed of reaction.

On the other hand, when ΔGo is negative: the reaction is spontaneous, thermodynamically favourable, and the products are more stable than the reactants

7 0
2 years ago
Other questions:
  • In the simulation, open the Micro mode, then select solutions indicated below from the dropdown above the beaker in the simulati
    15·1 answer
  • Litmus paper can be used to determine the _______ of a substance. A. relative volume B. relative pH C. temperature D. chemical f
    12·1 answer
  • One mole of N2 gas at STP will occupy what volume?
    10·1 answer
  • How do you design a good scientific experiment?
    5·1 answer
  • When mantle rocks near the radioactive core are heated, they become less dense than the cooler, upper mantle rocks. These warmer
    6·1 answer
  • Pls answer fast. thanks !
    6·1 answer
  • A true statement about mass is that:
    6·1 answer
  • 4.
    6·1 answer
  • Solid zinc oxide (ZnO) is added to hydrochloric acid (HCl) to form zinc chloride (ZnCl2) in water (H2O). How many moles of zinc
    9·1 answer
  • What is mole fraction???????​
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!