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
allochka39001 [22]
3 years ago
10

A student measures the mass and volume of a piece of aluminum. The measurements are 25.6 grams and 9.1 cubic centimeters. The st

udent calculates the density of the aluminum. What is the percent error of the student’s calculated density of aluminum?
(1) 1% (3) 3%
(2) 2% (4) 4%
Chemistry
2 answers:
IRISSAK [1]3 years ago
5 0

Answer:

D. 4%

Explanation:

The density of aluminum from Reference Table S is 2.70 g/cm3. This is the accepted value. Use the formula for density from Reference Table T and substitute in the values from the question to find the calculated density of Al:

Now use the formula for percent error from Reference Table T, substituting the calculated (measured) and accepted values for the density:

Advocard [28]3 years ago
3 0
The theoretical density of aluminum is 2.7 g/cm3. The experimental density is 25.6/9.1=2.8 g/cm3. The percent error is (2.8-2.7)/2.7*100%=3.7%≈4%. So the answer is (4) 4%.
You might be interested in
Write the example of solid liquid and gas separately ​
zysi [14]

Answer:

Solid = rocks or other hard stuff

Liquid = water or mild or other stuff likt that

7 0
2 years ago
Read 2 more answers
What is the concentration of a 1.5L solution that contains 0.030 mol of hydrochloric acid?
vichka [17]
Concentration is volume over number of moles
7 0
3 years ago
The illustration on the left represents a mixture of H2 (light blue) molecules and O2 (red) molecules. If these were to react to
kvasek [131]

Answer:

6 molecules of H2O are the maximum number.

Explanation:

From the drawing it can be seen that there are 6 H2 molecules and 3 O2 molecules reacting, which can be represented by the following chemical equation

6 H2 + 3 O2 ⇒ H2O

This equation is not balanced, so we proceed to balance it, being as follows:

6 H2 + 3 O2 ⇒ 6H2O

With which it can be determined that a maximum of 6 H2O molecules can be formed.

4 0
4 years ago
In water, Vanillin, C8H8O3, has a solubility of 0.070 moles of vanillin per liter of solution at 25C. What will be produced if 5
Rufina [12.5K]

Answer:

The full amount (5.00 g) will be dissolved in 1 L of water at 25°C.

Explanation:

The molecular weight (MW) of Vanillin (C₈H₈O₃) is calculated from the chemical formula as follows:

MW(C₈H₈O₃) = (12 g/mol x 8) + (1 g/mol x 8) + (16 g/mol x 3) = 152 g/mol

If 0.070 mol of C₈H₈O₃ are soluble per liter of water at 25°C, the maximum mass that can be dissolved in 1 L is:

0.070 mol x 152 g/mol = 10.64 g

Since 5.00 g is lesser than the maximum amount that can be dissolved (10.64 g), the added amount will be completely dissolved in 1 L of water at 25°C.

7 0
3 years ago
Help which one will it be
salantis [7]

Answer:

D

Explanation:

6 0
3 years ago
Read 2 more answers
Other questions:
  • Balance the following equation:<br> MgO + HCl = MgCl2* + H2*O
    7·2 answers
  • Transition metals tend to
    10·1 answer
  • Scientists have developed a new drug known to cure a previously incurable disease. What best explains if the new drug is a compo
    11·2 answers
  • True or False
    9·2 answers
  • Which statement best explains the genetic variation that results from sexual
    15·2 answers
  • Alligators are the large predators that eat many smaller animals in a swamp how might removing the alligators from a swamp habit
    7·1 answer
  • 14. If one half-life is the amount of time it takes for a radioactive isotope to decay by a factor of 2,
    6·2 answers
  • If you traveled 25 meters in 100 seconds, what is your speed?
    5·2 answers
  • What inference can be drawn from the graph?
    13·1 answer
  • Dosage calculation order: 3 mg available: 2 mg per 6 ml how many ml will be given?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!