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
Luba_88 [7]
3 years ago
13

Pedro adds 3.23 moles of helium to a balloon that already contained 4.51 moles of helium creating a balloon with a volume of 9.8

7 liters. What was the volume of the balloon before the addition of the extra gas?
Chemistry
1 answer:
sashaice [31]3 years ago
5 0

Answer:

7.The answer is 2.13 because if u add 3.23 and 4.51 and the answer is 7.74 and u add 2.13 to get 9.87. 3.23 + 4.51 + 2.13 is 9.87

Explanation:

You might be interested in
What is a similarity between wind and water?
labwork [276]
They are both sources of power for objects that people use.
5 0
3 years ago
Any change in average weather conditions on Earth that lasts for at least several decades is called
sladkih [1.3K]

Answer:climate change

Explanation:

8 0
3 years ago
Examples of nitrogens unreactivity
REY [17]
WATCH OUT BUDDY:<span>reactivity....Spelling mistake.

ANSWER:
</span>For example<span>, "air" sometimes comes bubbling out of the ground near oil wells. Today ... For </span>example, nitric oxide combines with oxygen and water in the atmosphere to make nitric acid. When it ....Nitrogen's<span> role in the Oklahoma City bombing.</span>
8 0
3 years ago
Which of the following liquids is basic?
IrinaK [193]
Milk is the most basic liquid
6 0
3 years ago
Write the symbolic notation of an isotope of an element having 8 protons, 8 electrons, and 9 neutrons
Mariulka [41]
The number of protons uniquely identifies the element. This is not on the periodic table. Isotopic notationincludes the atomic number and the mass number. 8 17 This isotope of oxygen has 8 protons (atomic number), 8 electrons and 9 neutrons
7 0
3 years ago
Other questions:
  • What is the mass of 1.72 moles of sodium nitrate? Use the periodic table and the polyatomic ion resource. A. 85.0 g B. 91.2 g C.
    10·2 answers
  • Which material does not melt at any temperature? wood, a mixture of different substances ethanol, a molecular compound sodium ch
    8·1 answer
  • A 265-mL flask contains pure helium at a pressure of 751 torrs. A second flask with a volume of 465 mL contains pure argon at a
    10·1 answer
  • Which parts (postulates) of Dalton's atomic theory has been modified in light of later discoveries
    8·1 answer
  • Draw a Lewis Dot Structure for the following element P
    15·1 answer
  • A certain reaction has an enthalpy of Δ=44 kJ and an activation energy of a=61 kJ. What is the activation energy of the reverse
    12·1 answer
  • What is the molecular geometry of a molecule made of two atoms that share one pair of electrons and have no lone electrons pairs
    8·1 answer
  • Nitrogen and carbon can form ___ bonds in which six electrons ( three pairs ) are shared.
    9·1 answer
  • 1. When water is evaporated from a copper sulfate solution, copper sulfate remain.​
    13·1 answer
  • Calculate the mass of 4.95 x 10^15 Ag atoms
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!