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
STALIN [3.7K]
3 years ago
12

Choose the best method or methods to determine the identity of an unknown chemical in lab. Select one: Taste a small amount of t

he chemical. Smell the chemical by inhaling the vapors. Perform a series of experiments. Ask another student the identity of the unknown chemical.
Chemistry
1 answer:
eduard3 years ago
5 0

Answer:Perform a series of experiments.

Explanation:

In the chemistry laboratory, unknown compounds are identified by a series of qualitative chemical tests called qualitative analysis. A well structured series of experiments with little quantities of the sample give us an idea of what the unknown sample may be. This is how an unknown compound may be identified in a chemical laboratory

You might be interested in
Yasir wants to determine if there is a relationship between room color and sleep. Based on his research, Yasir makes an educated
tia_tia [17]

Answer:

B). An Experiment that tests the hypothesis.

Explanation:

The element that is missing from Yasir's scientific investigation is 'an experiment which tests a hypothesis.' His experiment does not provide a verifiable statement revealing his proposition or prediction regarding the possible outcome of the experiment which could be verified by using a research or investigation. He rather tests his proposition indirectly by asking 'which color they like better' and using it to make an educated guess. Thus, <u>option B</u> is the correct answer.

8 0
4 years ago
Phenylpyruvic acid is produced in the body of abnormal amounts as the result of a molecular disease called phenylketonuria, whic
Andrej [43]

Answer:

6. C3H2O

Explanation:

C= 12.0107; H= 1.00797; O=15.9994

We calculate:

C= 65.85/12.01=5.48

H= 4.91/1.00=4.91

O=29.24/16.00= 1.82

Later, we divide among the smaller quantity

C=5.48/1.82= 3.01

H=4.91/1.82= 2.70

O=1.82/1.82=1

8 0
3 years ago
Nuclear fission involves
enot [183]

Nuclear fission is the splitting of atoms

5 0
4 years ago
If Sterling silver is 90.0% silver and 10.0% copper, what is the maximum amount of Sterling silver that can be made if you have
MArishka [77]

Answer:

x=54g

Explanation:

From the question we are told that:

Content of Sterling silver:

Let x be sterling silver

Silver S=0.9x

Copper C=0.1x

Total  silver available T=48.3

Generally the equation for Total amount to be made is mathematically given by

T=\frac{x*90}{100}

x=\frac{48.3*100}{90}

x=54g

8 0
3 years ago
A nuclear chemist measures the mass defect of nickel-56 and finds it to be 0.4667 amu. Based on this number, (a) calculate the n
NNADVOKAT [17]

Answer:

See explanation

Explanation:

Number of protons = 28

Number of neutrons = 28

Mass of each proton = 1.007277 amu

Mass of 28 protons = 28 * 1.007277 amu = 28.203756 amu

Mass of each neutron = 1.008665 amu

Mass of 28 neutrons = 28 * 1.008665 amu = 28.24262 amu

mass defect of nickel-56  = 0.4667 amu

Binding energy = Δmc^2

Binding energy = 0.4667 *(3 * 10^8)^2

Binding energy =4.2 * 10^16 J

Binding energy per nucleon = 4.2 * 10^16 J/56

Binding energy per nucleon = 7.5 * 10^14 J

5 0
3 years ago
Other questions:
  • A solution is a homogenous mixture of solute and solvent. there are different types of solutions. a carbonated drink is an examp
    6·2 answers
  • How does monochlorination work? Please describe with an exampel.
    11·1 answer
  • What are the four classifications of matter?<br>of those four, which two are pure substances?
    15·1 answer
  • A bond between a metal and a nonmetal atom is likely an ionic bond?<br><br> True or False
    8·1 answer
  • If titanium is irradiated with light of 233 nm, what is the maximum possible kinetic energy of the emitted electrons?
    6·1 answer
  • What are isoelctronic species​
    13·1 answer
  • 1. Select the correct statement: a. Colour of the transition metal ions arises due to d-d transition b. Colour of certain oxysal
    6·1 answer
  • Who can help me on this one ?
    10·1 answer
  • CH=C-CH=CH– CH = CH, what is the name of this molecule?​
    5·1 answer
  • Data that is collected that is mostly numbers?
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!