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
Anton [14]
3 years ago
11

In a second trial of this experiment, the molarity of koh(aq) was determined to be 0.95 m. the actual molarity was 0.83 m. what

is the percent error in the second trial?
Chemistry
1 answer:
Cloud [144]3 years ago
5 0
 The % error in the second trial  is calculated as follows

% error = actual molarity/  theoretical molarity  x100


= 0.83/0.95 x100 = 87.4% error of second trial
You might be interested in
How can you describe the location of vanadium (v, atomic number 23) on the periodic table? Choose all that apply.
Orlov [11]
Vandium is non metal but group 5 period 4 
5 0
3 years ago
MARKING BRAINLIEST! please help asap, i need a and b, thank you
defon

The time required to reduce the concentration from 0.00757 M to 0.00180 M is equal to 1.52 × 10⁻⁴ s. The half-life period of the reaction is 9.98× 10⁻⁵s.

<h3>What is the rate of reaction?</h3>

The rate of reaction is described as the speed at which reactants are converted into products. A catalyst increases the rate of the reaction without going under any change in the chemical reaction.

Given the initial concentration of the reactant, C₀= 0.00757 M

The concentration of reactant after time t is C₁= 0.00180 M

The rate constant of the reaction, k = 37.9 M⁻¹s⁻¹

For the first-order reaction: C_t =C_0-kt

0.00180 = 0.00757 - (37.9) t

t =  1.52 × 10⁻⁴ s

The half-life period of the reaction: t_{\frac{1}{2} } =\frac{C_0}{2k}

t_{\frac{1}{2} } =\frac{0.00757}{2\times 37.9}

Half-life of the reaction = 9.98 × 10⁻⁵s

Learn more about the rate of reaction, here:

brainly.com/question/13571877

#SPJ1

5 0
10 months ago
Silver metal can be prepared by reducing its nitrate, AgNO3 with copper according to the following equation:
Lerok [7]

%yield = 88.5%

<h3>Further explanation</h3>

Given

Reaction

Cu(s) + 2 AgNO₃(aq) → Cu(NO₃)₂(aq) + 2Ag(s)

Required

The percent yield

Solution

mol AgNO₃(MW=169,87 g/mol) :

= mass : MW

= 127 : 169.87

= 0.748

mol Ag from equation :

= 2/2 x mol AgNO₃

= 2/2 x 0.748

= 0.748

Mass Ag (theoretical) :

= mol x Ar Ag

= 0.748 x 108

= 80.784

% yield = (actual/theoretical) x 100%

%yield = 71.5/80.784 x 100%

<em>%yield = 88.5%</em>

7 0
2 years ago
Behavioral therapy began with _______________.
Mrac [35]

Answer:

B

Explanation:

Behaviour therapy was popularized by the U.S. psychologist B.F. Skinner, who worked with mental patients in a Massachusetts state hospital.

3 0
2 years ago
1-magma wich flows through channles to the surface will produce a???
AlladinOne [14]

Answer:

thats one hint. but for 1 it will produce lava

Explanation:

number 2

some of the Earth's grandest mountains are composite volcanoes--sometimes called stratovolcanoes. They are typically steep-sided, symmetrical cones of large dimension built of alternating layers of lava flows, volcanic ash, cinders, blocks, and bombs and may rise as much as 8,000 feet above their bases

6 0
3 years ago
Other questions:
  • The legs and the wings of an insect are attached to the ________. a. head b. thorax c. abdomen d. antennae
    13·2 answers
  • Chromium-51 has a half life of 27.70 days. How much will be left after 166.2 days if
    10·1 answer
  • A student combines 364.6 g of HCl with 80 g of NaOH in 5 L of water. What additional volume of H2O must be added to this mixture
    11·1 answer
  • Identify each process as endothermic or exothermic and indicate the sign of H . (a) an ice cube melting (b) nail polish remover
    8·1 answer
  • A 0.51 m aqueous solution of an unknown solute has a boiling point elevation of 0.62°c. The boiling point elevation of a 0.51 m
    10·1 answer
  • How many moles of neon (Ne) gas have a volume of 4.5L and a pressure of 2.1 atm at 302 K
    15·1 answer
  • Write the balance equation of ammonium sulfide + aluminum chloride <br>​
    10·1 answer
  • Calcium carbonate forms limestone, one of the most common rocks on Earth. It also forms stalactites, stalagmites, and many other
    6·1 answer
  • Logan is comparing the characteristics of different types of organisms. Which best describes a difference between insects and ba
    13·1 answer
  • What is the common uses of bases
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!