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
Lunna [17]
3 years ago
15

students calculated the circumference of a globe to be 60.0 cm. The actual circumference of the glide is 63 cm. The percent devi

ation of the students calculation was. 1. 0.48% 2. 2.8% 3. 5.0% 4. 21%

Chemistry
2 answers:
Brrunno [24]3 years ago
7 0

<u>Answer:</u> The correct answer is Option 2.

<u>Explanation:</u>

To calculate the percentage error, we use the equation:

\%\text{ error}=\frac{|\text{Experimental value - Actual value}|}{\text{Actual value}}\times 100

We are given:

Experimental value of circumference = 60.0 cm

Actual value of circumference = 63 cm

Putting values in above equation, we get:

\%\text{ error}=\frac{|60.0-63|}{63}\times 100\\\\\%\text{ error}=4.8\%

Hence, the correct answer is Option 2.

Naily [24]3 years ago
6 0
#2. Percent error (or deviation) is calculated as ((TV-EV)/EV))*100
You might be interested in
Mengapa air panas maupun air dingin yang disimpan di dalam termos cenderung lebih tahan lama suhu panas atau dinginnya
Zarrin [17]
Yes yes yes yes yes yes yes yes yes yes
5 0
3 years ago
What is the difference between a nucleus in Biology and Chemistry?
alina1380 [7]

Answer:

:)

Explanation:

The nucleus in biology is usually referring to that of

living cells found in organisms in which contains DNA whereas the nucleus in chemistry is usually referring to that of atoms in which contains subatomic particles such as the proton and neutron.

7 0
1 year ago
Is rust a pure substance or a mixture? &lt;3
Naddik [55]
Iron is a pure substance
6 0
3 years ago
Read 2 more answers
A balloon has a volume of 6.2 liters at 23.2 C. The balloon is then heated to a temperature of 144.0 C. What is the volume of th
Marina CMI [18]

Answer:

8.7 L

Explanation:

T2(V1/T1) = V2

417.15 K(6.2 L/296.45 K) = 8.7 L

Remember to almost always change celcius to kelvin. Also, this is part of Charle's Law (temp and volume are proportional, so if temp increaces so must the volume or vice versa). Lastly, Charle's Law has the formula of V1/T1 = V2/T2. I just rearranged it to go along with your problem. Hence, the T2(V1/T1) = V2

4 0
3 years ago
What is the Na+ concentration in each of the following solutions:
iren [92.7K]

Sodium Sulfate = Na2(SO4) meaning there are two ions of Na+ in one mole of Sodium Sulfate the M stands for Molarity, defined as Molarity = (moles of solute)/(Liters of solution), So if the Na2SO4 solution is 3.65M that means one Liter of has 3.65 moles of Na2SO4, the stoichiometry of Na2SO4 shows that there would be two Na+ ions in solution for every one Na2SO4.

Therefore if 3.65 moles of Na2SO4 was to dissolve, it would produce 7.3 moles of Na+, and since this is still a theoretical solution, we can assume 1 L of solution.

Finally we find [Na+] = 2*3.65 = 7.3M

Use the same logic for parts b and c




5 0
3 years ago
Other questions:
  • The rate of disappearance of HBr in the gas phase reaction 2HBr(g) → H2 (g) I2 (g) is 0.190 M s-1 at 150°C. The rate of appearan
    13·1 answer
  • How do you know if a chemical change has taken place?
    6·1 answer
  • An atom of which element is represented by the model of a neutral atom? A Carbon (C) B Oxygen (O) C Sulfur (S) D Nitrogen (N) 6.
    13·1 answer
  • What is typically displayed on the y-axis of a solubility curve?
    8·1 answer
  • While investigating greenhouse gases, I measured 0.1875 grams of carbon dioxide in a 500-gram sample of the atmosphere. What is
    10·1 answer
  • Starting with a vessel of temperature 50.1°C, a pressure of 6263.MmHg and volume 461.1mL, what is its final volume, in liters, i
    14·1 answer
  • Deep sea divers can experience the bends due to an increased amount of nitrogen in the blood
    9·1 answer
  • Set goals and objectives for a company
    11·1 answer
  • Which of the following was NOT among Democritus's ideas?
    12·1 answer
  • Please help me. It's urgent .
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!