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
NNADVOKAT [17]
3 years ago
5

There are 34 qeustions on a test John answers 22 of them correctly what is his percent error

Chemistry
1 answer:
Aleks [24]3 years ago
4 0

Answer:

35.29%

Explanation:

% error = |experimental value - Accepted value| / Accepted Value x 100

Number of questions: 34

Number of questions answered: 22

%error = |22-34| / 34 x 100

Hence, John's percentage error is 35.29 % or 35.3%

You might be interested in
T. Svedberg measured the molecular weight of carbonyl hemoglobin by velocity centrifugation. In this experiment, 0.96 g of prote
Natalija [7]

Answer:

The molecular weight is 77.7 kg/mol

Explanation:

The molecular mass of hemoglobin is equal to:

M=\frac{RTs}{D(1-Vp)}

Where

R = molar gas constant = 8.315 J/K mol

p = density = 0.998 g/mL

V = specific volume = 0.755 mL/g

s = sedimentation rate = ?

D = diffusion rate = 7x10⁻¹¹m²/s

T = temperature = 303 K

The sedimentation rate is equal to:

s=\frac{1}{w^{2}t } ln(\frac{x_{b,t} }{x_{b,0} } )

Where

w = angular velocity = 39300 rpm = 246929.18 rad/min

xb,30 = boundary midpoint distance at 30 min = 4.525 + 0.074 cm

t = time = 30 min

xb,0 = boundary midpoint distante at 0 min = 4.525 cm

s=\frac{1}{246929.18^{2}*30 } ln(\frac{4.525+0.074}{4.525} )=8.87x10^{-13} min=5.32x10^{-13} s

The molecular weight is:

M=\frac{8.315*303*5.32x10^{-13} }{7x10^{-11}*(1-(0.755*0.998)) } =77.7kg/mol

5 0
3 years ago
9701 s16_qp_12.pdf - Adobe Reader
Anni [7]

The change in oxidation number = +1

<h3>Further explanation</h3>

Reaction 1

Cl₂(aq) + H₂O(I) → H⁺(aq) + Cl⁻(aq) + HClO(aq)

Reaction 2

HClO(aq) + H₂O(I) → H₃O⁺(aq) + ClO⁻(aq)

The change in oxidation number of chlorine :

From Cl₂ to ClO⁻

oxidation number Cl₂=0

oxidation number Cl in ClO⁻

\tt Cl+(-2)=-1\\\\Cl=+1

So the change : +1

8 0
3 years ago
Determine the rate of a reaction that follows the rate law:
Natali5045456 [20]
A. 0.12 (mol/L)/s

rate = 1 x 10-2 • 2^2 • 3
8 0
3 years ago
Which is most likely to help an introduced species become invasive?
7nadin3 [17]
An introduced species could be invasive if it can outcompete native species for resources. Examples are light, nutrients, water, food etc.
7 0
3 years ago
Explain why certain parts of the Earth are more prone to earthquakes or volcanoes.
Nastasia [14]
If countries are on plate boundaries, such as Japan, they are more prone to earthquakes. If countries are above hot spots, such as Hawaii, they are more prone to volcanoes.
7 0
4 years ago
Other questions:
  • He partial lewis structure that follows is for a hydrocarbon molecule. in the full lewis structure, each carbon atom satisfies t
    15·2 answers
  • A car is traveling 71.4 kilometers per hour. What is its speed in miles per minute? One kilometer = 0.62 miles.
    9·1 answer
  • What is concentration​
    5·1 answer
  • The formula for the ammonium ion
    12·2 answers
  • You have lost nearly 6 inches of top soil on your 200 acre field in the last 10 years. The problem seems to be getting even wors
    10·1 answer
  • Which description of nitrogen-15 is correct?
    11·1 answer
  • Which term identifies a factor that will shift a chemical equilibrium?
    11·2 answers
  • How many grams of NaOH are needed to prepare 100.ml of a 0.20 M NaOH solution
    14·1 answer
  • What is the molar mass of CaCL2•2 H2O
    5·1 answer
  • De quelle atome dérive le néon svp
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!