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
Nat2105 [25]
2 years ago
12

Atomic radius and electronegativity trends are...

Chemistry
1 answer:
fiasKO [112]2 years ago
7 0
The second one is right
You might be interested in
Unlike an element, a(n) ________ may be separated through a physical process like filtration.
Amiraneli [1.4K]
The answer is mixture, hope this helps!
8 0
3 years ago
Compound X has a molar mass of 316.25 g*mol^-1 and the following composition:
Leokris [45]

Answer:

Compound X has a molar mass of 316.25 g*mol^-1 and the following composition:

element & mass %

phosphorus & 39.18%

sulfur & 60.82%

Write the molecular formula of X.

Explanation:

The given molecule of phosphorus and sulfur has molar mass --- 316.25 g.

Empirical formula calculation:                      

element:              phosphorus                       sulfur

co9mposition:      39.185%                            60.82%

divide with

atomic mass:          39.185/31.0 g/mol           60.82/32.0g/mol

                              =1.26mol                           1.90mol

smallest mole ratio:   1.26mol/1.26mol =1      1.90mol/1.26 mol =1.50

multiply with 2:          2                                         3

Hence, the empirical formula is:

P2S3.

Mass of empirical formula is:

158.0g/mol

Given, molecule has molar mass --- 316.25 g/mol

Hence, the ratio is:

316.25g/mol/158.0 =2

Hence, the molecular formula of the compound is :

2 x (P2S3)

=P_4S_6

8 0
2 years ago
Someone help me answer this please! I’ll mark you brainliest
kondor19780726 [428]

b. increase in surface area

<h3>Further explanation</h3>

Given

Speeding up a chemical reaction

Required

Factors used to speed up reactions

Solution

There are several factors that influence reaction kinetics :  

1. Concentration  

2. Surface area  

3. Temperature  

4. Catalyst  

5. Pressure  

6. Stirring  

Temperature is related to the kinetic energy of the particles. Heat is absorbed causes the particles of matter to move faster so that the reaction can take place faster

The enlarged surface area of the reactants causes more particles to react with other particles.

50 g square block of sulfur can be broken into small pieces or powdered so that more particles come into contact with each other

8 0
3 years ago
Explain the units and how to solve the following metric conversion then solve the metric conversion by filling in the blank 12KM
LiRa [457]

Answer:- 12 km = 12000 m

Solution:- It's a metric unit conversion where we are asked to convert 12 km to m where km stands for kilometer and m stands for meter.

In metric conversions, kilo means 1000.

So, 1 km = 1000 m

It means,  we multiply the given km by 1000 to get the answer in m as:

12km(\frac{1000m}{1km})

= 12000 m

Hence, 12 km = 12000 m.

5 0
3 years ago
Can you do my project please and I'll mark brainllest
Alex17521 [72]

Answer:

Whats the project?

Explanation:

8 0
3 years ago
Other questions:
  • Class science A revolution occurs:
    15·2 answers
  • Metals expand when heated. if gold is heated, what will happen to its density?
    7·1 answer
  • How many calcium (Ca) atoms are in the chemical formula:
    14·1 answer
  • Both amines and amides are derivatives of ammonia. True False
    8·2 answers
  • NO<br> Assign oxidation numbers to each element in this compound.
    9·1 answer
  • Identify the scientist associated with each major contribution to the development of atomic theory. He discovered the electron.
    11·1 answer
  • Regions that receive up to 20 inches of rainfall per year are referred to as __________ because they receive more precipitation
    8·1 answer
  • 1:( Que estudia la química ?
    14·1 answer
  • 50 POINTS !! I have a science project that I need help with its called pH
    14·2 answers
  • The multiple covalent bond in a molecule of 1-butene is a.
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!