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
zmey [24]
3 years ago
7

SELECT ALL THAT APPLY

Chemistry
2 answers:
Luden [163]3 years ago
8 0
The answer is 1 and 3. The number of atoms per molecule of these three substance is not equal. So they will not contain same number of atoms. And for gas, under same condition with same number of moles will have the same volume. The g.f.w is related to the atomic mass. So they are different.
dybincka [34]3 years ago
4 0

Answer:

1 and 3

Explanation:

You might be interested in
What has to happen to a substance in order for you to observe it’s chemical properties
nydimaria [60]
U must burn it
or
Make it under go chemical treatment
5 0
3 years ago
0.250 moles of NaCl is dissolved in 0.850 L of solution. What is the molar concentration?
Nuetrik [128]

Considering the definition of molarity, the molar concentration is 0.294 \frac{moles}{liter}.

Molarity reflects the concentration of a solution indicating the number of moles of solute that are dissolved in a given volume.

The molarity of a solution is calculated by dividing the moles of the solute by the volume of the solution:

molarity=\frac{amount of moles of solute}{volume}

Molarity is expressed in units \frac{moles}{liter}.

In this case, you know:

  • amount of moles of solute= 0.250 moles
  • volume= 0.850 L

Replacing in the definition of molarity:

molarity=\frac{0.250 moles}{0.850 L}

Solving:

molarity= 0.294 \frac{moles}{liter}

Finally, the molar concentration is 0.294 \frac{moles}{liter}.

Learn more about molarity with this example: brainly.com/question/15406534?referrer=searchResults

6 0
3 years ago
2. Calculate the atomic mass of an element that has two isotopes, each with 50.00% abundance. One isotope has a mass of 63.00 am
melamori03 [73]

Answer:

The atomic mass of element is 65.5 amu.

Explanation:

Given data:

Abundance of X-63 = 50.000%

Atomic mass of  X-63 = 63.00 amu

Atomic mass of X-68 = 68.00 amu

Atomic mass of element = ?

Solution:

Abundance of X-68 = 100-50 = 50%

Average atomic mass = (abundance of 1st isotope × its atomic mass) +(abundance of 2nd isotope × its atomic mass)  / 100

Average atomic mass  = (50×63)+(50×68) /100

Average atomic mass =  3150 + 3400 / 100

Average atomic mass  = 6550 / 100

Average atomic mass = 65.5 amu.

The atomic mass of element is 65.5 amu.

7 0
3 years ago
Use the periodic table to identify each of the following bonds as polar or nonpolar.
Molodets [167]

Answer:

Polar  

Step-by-step explanation:

Electronegativity increases from <em>left to right</em> in the Periodic Table.

Cl is further right than C (both tinted pink) in the portion of the Periodic Table below.

Cl is <em>more electronegative</em> than C, so the Cl has a partial negative charge and the C has a partial positive charge.

The C-Cl bond is polar.

5 0
3 years ago
As you move from row ______ to row ______ in the periodic table, the atomic radius of the elements DECREASES.
Margarita [4]

Answer:

7 to 1

Explanation:

As you move from row ----- to row ------ in the periodic table, the atomic radius of the elements DECREASES.?

And we have 7 rows in a periodic table, so the answer has to either 1 to 7 or 7 to 1

Theoretically,

Atomic size increase as we move from top to bottom as an extra shell gets added up with every period.

SO, the answer is,  7 to 1

6 0
3 years ago
Other questions:
  • How to tell if a reaction is exothermic or endothermic from an equation?
    15·1 answer
  • What causes bread dough to rise? <br> a.ethanol <br> b.carbon dioxide
    13·2 answers
  • How do you know in a ionisation energy graph that sodium increases, magnesium increases and what elements decreases?​
    5·1 answer
  • If someone told you they had a career in either ecology, paleontology, or botany, what area of science is this?
    14·1 answer
  • Give the symbol for an element that is:__________
    13·2 answers
  • Which organisms break down dead matter and waste into nonliving elements?
    14·2 answers
  • Which is not an example of a
    6·1 answer
  • Which process is shown in the diagram?
    13·1 answer
  • Which of the following choices are the characteristics of life
    13·1 answer
  • Beta particles are identical to Multiple Choice protons. helium atoms. hydrogen atoms. helium nuclei.
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!