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
Monica [59]
3 years ago
9

Which of the following is NOT an area of study in chemistry? * 1 point Biochemistry Physical chemistry Ergonomic chemistry Analy

tical chemistry
Chemistry
2 answers:
artcher [175]3 years ago
5 0

Answer:

i can't see it

Explanation:

wish i could help

USPshnik [31]3 years ago
4 0

Answer:

bio physical chemist

Explanation:

You might be interested in
A booth renter is responsible for conducting all necessary business blank
tatyana61 [14]

Answer:

building and managing their own clients, purchasing supplies and keeping records

hope this helps you

5 0
3 years ago
The mystery of the unknown substance A prominent automotive businessman has been murdered in New York. The Crime Scene Investiga
Alisiya [41]
<span>Data:

1) molar mass: 58.0714 g.

2) mass analysis

C: 18 g
H: 3 g
O: 8 g.

Solution
</span>
<span>What is the percent composition of all the components in the liquid?

mass of C + mass of H + mass of O = 18g + 3g + 8g = 29 g

Percent composition:

C: (18g / 29g) * 100 = 62%

H: (3g / 29g) * 100 = 10%

O: (8g / 29g) * 100 = 28%
                               --------------
           Total               100%

What is the empirical formula of the compound?

Convert masses to number of moles by dividing each mass by the atomic mass of the correspondant element:

C: 18 g/ 12.0 g/mol = 1.5 mol

H: 3 g / 1.0 g/mol = 3 mol

O: 8 g / 16 g/mol = 0.5 mol

Divide each number of moles by the smaller, i.e. 0.5 mol

=> C: 1.5 mol / 0.5 mol = 3 mol
=> H: 3 mol / 0.5 mol = 6 mol
=> O: 0.5 mol / o.5 mol = 1 mol

=> Empirical formula: C3 H6 O

What is the molecular formula of the unknown liquid?

First,calculate the molar mass of the empirical formula:

C3 H6 O => 3 * 12 g/mol + 6*1 g/mol + 16 g/mol = 58 g/ mol

Secont, given that the molar mass is the same that the empirical mass, the molecular formula is the same empirical formula.

=> Molecular formula = C3 H6 O.

This compound has been identified as a ketone.

Go online and figure out the name of this compound.

It is easy to find that this compound is propanone or acetone (both names are valid).

Now you can go online and find its  characteristics and common uses.

Can you identify the killer from this information? How?

Likely they think you can presume that the killer is the actress, because women use acetone regularlty to remove the nail polish.
</span>
8 0
3 years ago
A chemical reaction produces formaldehyde, with a chemical formula of CH2O. Carbon is in Group 4A, oxygen is in Group 6A, and hy
ruslelena [56]

Answer:

A chemical reaction produces formaldehyde, with a chemical formula of CH2O. Carbon is in Group 4A, oxygen is in Group 6A, and hydrogen is in Group 1A on the periodic table. In one to two sentences, can you describe the bonds in a molecule of formaldehyde in terms of valence electrons?

Explanation:

5 0
3 years ago
If 5.0 L of carbon dioxide gas are produced by the reaction below at STP, how many liters of oxygen gas were used in the reactio
Alik [6]
One mole of gas occupies 22.4 liters, 5*1/22.4=0.22 moles of carbon dioxide ration of oxygen to carbon dioxide is 1:2 so we divide 0.22 by 2 we get 0.11 moles of oxygen 1 mole occupies 22.4 litres, what if 0.11 moles of oxygen were used what volume would it occupy. so 0.11*22.4/1=2.5L
5 0
3 years ago
What are the dependent and independent variables? (Picture^^)
Sedbober [7]

Answer:

X axis shows the independent and Y axis shows the dependent.

Explanation:

  • As the independent variable is always plotted on the X-axis of the graph the Y-axis shows the dependent variable that is affected by the X variables Time is an independent variable and is always shown along the X-axis.  
  • Such as the image showed tells about the data of N2O biofuel emissions from 2009-10. Thus this will be plotted along the X-axis and Y-axis will show the amount of nitrogen fertilizer applied.
5 0
2 years ago
Other questions:
  • If a combination reaction takes place between potassium and chlorine what is the product
    8·1 answer
  • Which substance would have the highest melting point, based on electronegativity
    9·2 answers
  • What is the average mass of an electron? A. 1 amu B. 1,837 amu C. 1/1,837
    10·1 answer
  • Draw the condensed structural formulas for all the possible haloalkane isomers that have four carbon atoms and a bromine.
    9·1 answer
  • What is 1.724 L expressed in cm3?
    8·1 answer
  • Hello! Could somebody please help? Thanks!! Will give brainliest and 38 points!!!
    5·2 answers
  • Why do you think the astronomical unit is not used to measure distances on earth?
    11·2 answers
  • Hurry answer this pls so i can pass
    5·2 answers
  • What is molecular formula
    15·2 answers
  • ASAP something that flows into a substance
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!