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
wariber [46]
4 years ago
5

What is the main purpose of scientific models

Chemistry
1 answer:
Viktor [21]4 years ago
4 0
The main purpose of scientific methods, is to show the variations of the topic you are doing in science and how you are proving it to be that way.

You might be interested in
Question 12 (1 point)
Vinvika [58]

Answer:

Option c. Neutral

Explanation:

Only neutral solution gives a green colouration to a pH paper

8 0
3 years ago
Read 2 more answers
scientists often look for and attempt to explain patterns in nature. explain why patterns are important
Ronch [10]

patterns are important because they prove life has meaning ( or if you mean  

Scientifically  is is that the ability to recognize and create patterns help scientists make predictions based on there observations.

8 0
3 years ago
When 125 mL of 0.150 M Pb(NO3)2 is mixed with 145 mL of 0.200 M KBr, 4.92 g of PbBr2 is collected. Calculate the percent yield.
Semenov [28]

Answer:

Y = 92.5 %

Explanation:

Hello there!

In this case, since the reaction between lead (II) nitrate and potassium bromide is:

Pb(NO_3)_2+2KBr\rightarrow PbBr_2+2KNO_3

Exhibits a 1:2 mole ratio of the former to the later, we can calculate the moles of lead (II) bromide product to figure out the limiting reactant:

0.125L*0.150\frac{molPb(NO_3)_2}{L} *\frac{1molPbBr_2}{1molPb(NO_3)_2} =0.01875molPbBr_2\\\\0.145L*0.200\frac{molKBr}{L} *\frac{1molPbBr_2}{2molKBr} =0.0145molPbBr_2

Thus, the limiting reactant is the KBr as it yields the fewest moles of PbBr2 product. Afterwards, we calculate the mass of product by using its molar mass:

0.0145molPbBr_2*\frac{367.01gPbBr_2}{1molPbBr_2} =5.32gPbBr_2

And the resulting percent yield:

Y=\frac{4.92g}{5.32g} *100\%\\\\Y=92.5\%

Regards!

4 0
3 years ago
A balloon has a volume of 1.40 L at 24.0ºC. The balloon is heated to 48.0°C. Calculate the new volume of the balloon.
ruslelena [56]

Answer:I am not sure how

Explanation: sorry free trial

5 0
3 years ago
What is an internal cost of driving a domestic car?
Nataly_w [17]

Answer:

The correct option is: Cost of materials used in manufacture

Explanation:

There are two types of costs of an object: the internal costs and the external costs.

The internal cost of an object is the direct monetized cost. It refers to the cost involved in the <u>production or manufacturing of a given objec</u>t. Example: labor, <u>material required</u>, equipment, energy, and overhead expenses.

3 0
3 years ago
Other questions:
  • What is the molecular formula for Tricarbon nonachloride?
    5·3 answers
  • Helium is the lightest noble gas and the second most abundant element (after hydrogen) in the universe. The mass of a helium−4 a
    12·1 answer
  • The coenzyme involved in a transaminase reaction is: A. biotin phosphate. B. lipoic acid. C. nicotinamide adenine dinucleotide p
    8·1 answer
  • Smell of berium please answer fast
    10·1 answer
  • A substance is present in the gaseous state at room temperature. Which of the following best explains the probable position of t
    7·2 answers
  • What pressure is required to reduce 57 mL of
    15·1 answer
  • What is the overall trend for ionization energy on the periodic chart?
    5·2 answers
  • While preforming an experiment involving colors and heat,Susan noticed that the black paper was warmer than the white piece of p
    15·1 answer
  • Hormones are secreted by glands in the human body. The hormones control different functions of the body by targeting specific or
    14·1 answer
  • What is the strongest type of intermolecular force between solve and solvent in Cu(s) in Ag(s)?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!