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
Sholpan [36]
3 years ago
10

2. How many grams are in 2.05 x 1030 atoms of Lithium (Li)?

Chemistry
1 answer:
suter [353]3 years ago
4 0
Atoms = 3.9 x 10. 24 atoms. 1 mole. 2. How many moles of argon are in a sample ... 6.02 x 10. 23 atoms. 3. How many moles are in 2.5g of lithium? 2.5 grams Li .
You might be interested in
A container holds 6.4 moles of gas. Hydrogen gas makes up 25% of the total moles in the container. If the total pressure is 1.24
Degger [83]
  The   partial  pressure of hydrogen is 0.31  atm

calculation

find the number of  hydrogen   moles the container, that is

25/100  x 6.4  =1.6 moles of hydrogen

find the  partial pressure for hydrogen  in 1.6 moles

that is   6.4  moles=  1.24 atm
            1.6  moles= ?

by  cross  multiplication

1.6moles  x1.24  atm/ 6.4 moles=  0.31 atm
6 0
3 years ago
Which of the following elements is the smallest?
Oliga [24]

Answer:

Explanation:

The atomic radius of elements are used to estimate the sizes of elements. The atomic radius is taken as half of the inter-nuclear distance between two covalently bonded atoms of non-metallic elements or half of the distance between two nuclei in the solid state of metals.

To solve this problem we will obtain the atomic radius values of the given elements from a standard atomic radius table;

          Si          111 pm

           P          98 pm

          Cl          79 pm

            S           87pm

pm = picometer

We see that chlorine has the least atomic radius

7 0
3 years ago
Read 2 more answers
Convert each into decimal form.<br>a) 1.56× 10^3<br>b) 0.56×10-4​
Lera25 [3.4K]

Answer: A = 1560

               B = 1.6

Explanation: brainlest please

3 0
3 years ago
Jose times how long sugar takes to dissolve in warm water. he conducts four trials of his experiment. what should he conclude fr
mylen [45]

He can conclude that his experiment has very low precision.

<h3>What is Precision ?</h3>

Precision is defined as the degree of refinement with which an operation is performed or a measurement .

Precision is how close the exact answers are together.

As, the answers are increasing in time.

None of the answers are similar to one another.

Hence, He can conclude that his experiment has very low precision.

Learn more about Precision here ;

brainly.com/question/27845433

#SPJ1

7 0
2 years ago
Comets orbit in short, circular paths around the sun.<br><br> Is this true or false..? Thank you!
Luba_88 [7]
The answer to your question is true.
7 0
3 years ago
Read 2 more answers
Other questions:
  • A sample was prepared by mixing 18. ml of 3.00 x 10^-3 m crystal violet (cv) with 2.00 ml of 0.250 m naoh. calculate the resulti
    12·1 answer
  • In order for a substance to change from a liquid to a gas,
    5·1 answer
  • velocity and time information for a leftward moving car are shown. t = 4.0s v= 4.0 m/s. t = 0.0 v=20.0 m/s. what is the magnitud
    8·1 answer
  • I NEED ASAP!
    12·2 answers
  • The quantum mechanical model of the atom
    11·2 answers
  • We inherit certain traits, like hair color or height, from our___
    7·2 answers
  • Many towns in flood-prone areas are surrounded by___ that are built to hold back rising water.
    15·1 answer
  • Two aqueous NaCl solutions of equal volume and concentration were kept in flasks and held at different temperatures. The two sol
    10·1 answer
  • Are we the only person in the universe?
    12·1 answer
  • The energy E of the electron in a hydrogen atom can be calculated from the Bohr formula:
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!