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
lianna [129]
3 years ago
15

To test the quality of water sources in her area, Shameka collects five samples from each water source and tests the quality of

each sample.
Which important step of scientific design
is Shameka conducting?​

Chemistry
1 answer:
RUDIKE [14]3 years ago
5 0
Experiment because she is actually taking the samples and testing them.
You might be interested in
The smallest particle to retain the properties of an element is an?
svlad2 [7]
I’m so sorry explain it more
4 0
3 years ago
Chemistry. Will mark Brainly.
kogti [31]

Answer:

c is right

Explanation:

8 0
3 years ago
Chemistry tests that are not stat are typically drawn in what type of tube
MArishka [77]
Lithium heparin tube i think, could be wrong but i think this is right.
3 0
3 years ago
What is the concentration (in M) of a sample of the unknown dye with an absorbance of 0.25 at 542 nm?
Sladkaya [172]

Answer:

see explanation below

Explanation:

Question is incomplete, so in picture 1, you have a sample of this question with the missing data.

Now, in general terms, the absorbance of a substance can be calculated using the beer's law which is the following:

A = εlc

Where:

ε: molar absortivity

l: distance of the light in solution

c: concentration of solution

However, in this case, we have a plot line and a equation for this plot, so all we have to do is replace the given data into the equation and solve for x, which is the concentration.

the equation according to the plot is:

A = 15200c - 0.018

So solving for C for an absorbance of 0.25 is:

0.25 = 15200c - 0.018

0.25 + 0.018 = 15200c

0.268 = 15200c

c = 0.268/15200

c = 1.76x10⁻⁵ M

5 0
3 years ago
The mass of an atom is measured in a unit named the<br> ____. fill in the blank please helpppp
Volgvan

Answer: amu

Explanation: it stands for atomic mass unit and it is the measurement that’s used to measure the mass of atoms

5 0
3 years ago
Other questions:
  • A 10kg bowling ball would require what force to accelerate down an alleyway at a rate of 3m/s2?
    6·1 answer
  • How many grams of sodium acetate are in solution in the third beaker?
    13·1 answer
  • Identify the hybridization of the n atom in nf3.
    9·2 answers
  • Persamaan ion for Mg+HCI
    12·1 answer
  • Juanita dissolves 46 g of MgBr2 (molar mass: 184.11 g/mol) in 0.5 kg of distilled water. What is the molality of the solution?
    14·1 answer
  • What instrument is used to measure heat released or absorbed in a reaction?
    7·1 answer
  • If a radioisotope has a half-life of 4 years, how much remains of a starting amount of 40 grams after 16 years have passed?
    10·1 answer
  • How does temperature differ from heat?
    13·1 answer
  • Which of the following is an
    7·2 answers
  • What is the volume of 4.78g of O2 gas at STP?
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!