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
VMariaS [17]
2 years ago
15

As chief chemist at Superior Analytical Products (SAP) you must design an experiment to determine the density of an unknown liqu

id to three (3) significant figures. The density is of the order of 1 g/cm3. You have approximately 7 mL of the liquid and only graduated cylinders and balances are available for your use. Which of the following combinations of equipment will allow you to meet but not exceed your goal?
a. graduated cylinder with +0.1 mL uncertainty, balance with :0.1g.
b. graduated cylinder with ±001 mL uncertainty: balance with 101 g uncertainty.
c. graduated cylinder with t0.01 mL uncertainty balance with t0 01 g uncertainty.
d. graduated cylinder with ±0 001 mL uncertainty, balance with 10001 g uncertainty.
Chemistry
1 answer:
maksim [4K]2 years ago
7 0

Answer:

The correct answer is a

Explanation:

The formula for density is mass ÷ volume. Hence, a balance is required to determine the mass while a measuring/graduated cylinder is required to determine the volume.

The ideal measuring cylinder and balance to be used should have an uncertainty of just 0.1 ml and 0.1 g respectively. This reduces the chances of the answer gotten from the formula above to be more than 3 significant figures.

For example, if the volume to be used is 4.0 ml and the mass of this volume is 3.5 g, the density will be

Density = 3.5 ÷ 4

Density = 0.875 g/cm³ or 0.875 g/ml

NOTE that cm³ is the same measurement as mL

The answer above is in 3 significant figures

You might be interested in
Which of the following is a correct description of a double bond between two carbon atoms
kicyunya [14]

A double bond between carbon atoms is longer than a triple bond between carbon atoms.

5 0
3 years ago
How is the oxidation state of a transition metal determined from the chemical formula ?
Vera_Pavlovna [14]

Answer:

Explanation:

In a chemical formula, the oxidation state of transition metals can be determined by establishing the relationships between the electrons gained and that which is lost by an atom.

We know that for compounds to be formed, atoms would either lose, gain or share electrons between one another.

The oxidation state is usually expressed using the oxidation number and it is a formal charge assigned to an atom which is present in a molecule or ion.

To ascertain the oxidation state, we have to comply with some rules:

  • The algebraic sum of all oxidation numbers of an atom in a neutral compound is zero.
  • The algebraic sum of all the oxidation numbers of all atoms in an ion containing more than one kind of atom is equal to  the charge on the ion.

For example, let us find the oxidation state of Cr in Cr₂O₇²⁻

This would be:  2x + 7(-2) = -2

                          x = +6

We see that the oxidation number of Cr, a transition metal in the given ion is +6.

7 0
3 years ago
Read 2 more answers
What are the reasons global warming is caused my humans and animals. Plz help 100 points
pantera1 [17]
Global Warming has been increased by living organisms like animals and humans by many ways:

1) We burn fossil fuels, which is very bad for our Environment's health
2) Animals like cows & buffalo produces a lot of methane which causes Global Warming.
3) Animals cut a lot of trees for their products, so increase the amount of Carbon dioxide in the atmosphere, thus increases Global Warming.
4) We don't minimize our dependence on Non-renewable source of energy which 'causes a lot of pollution in the environment

Hope this helps!
8 0
3 years ago
Read 2 more answers
Whose main job is to help a plant cell make proteins
hoa [83]

Answer:

Water

Explanation:

Because water is very important

7 0
2 years ago
Read 2 more answers
70<br><br> What is 27/100 plus 3/10 equals
Brut [27]

Answer:

that is my answer hope it helps you out

Explanation:

i got 1.40 for my answer

6 0
2 years ago
Other questions:
  • A neutral lithium atom has 1 valence electron. A neutral bromine atom has 7 valence electrons. A chemical reaction between the 2
    8·2 answers
  • In synthesis reactions, there are always more _____________ than ________________.
    12·1 answer
  • Anna stated that ionic compounds have high melting points and low boiling points. She said that this demonstrates that ionic com
    12·2 answers
  • Is H-3 stable?<br> Is He-3 stable?<br> Is He-5 stable?<br> Is Li-7 stable?<br> Is Be-7 stable?
    11·1 answer
  • When the following equation is balanced, the coefficient of H2O is Ca(s) + H2O + Ca(OH)2 + H2 a) 2
    15·1 answer
  • 1. Why don't the elements neon and argon react with other elements to form<br> compounds?
    7·1 answer
  • As frequency decreases, wavelength…...<br> finish this sentence
    7·1 answer
  • Atomic Radius________across (left to right) a period and______down a group.
    5·2 answers
  • How is energy converted in a hydroelectric plant?
    9·1 answer
  • When 136g of glycine are dissolved in of a certain mystery liquid , the freezing point of the solution is lower than the freezin
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!