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
yaroslaw [1]
3 years ago
12

PLEASE HELP!! DIMENSIONAL ANALYSIS AND MOLE CONVERSIONS CHEMISTRY!!

Chemistry
1 answer:
Slav-nsk [51]3 years ago
7 0

Answer:

Moles of helium gas = 120

Explanation:

Given:

Volume of He = 30 L = 30,000 ml

Density of He = 0.016 g/ml

Find:

Moles of helium gas

Computation:

Mass = Volume of He x Density of He

Mass = 30,000 x 0.016

Mass = 480 gram

Moles of helium gas = 480 / 4

Moles of helium gas = 120

You might be interested in
Can periodic table indicates occurrance of the elements, why?​
Allushta [10]

Answer: No

Explanation:

A periodic table can be defined as the table in which the row of chemical elements are present. All the elements of the row have same number of electron shells.

The arrangement of elements is based on atomic numbers, electron shell model and other chemical properties. The elements are placed in increasing order of atomic number.

This table does not give information about the occurrence of the elements.

6 0
3 years ago
What type of mixture is fog?
lilavasa [31]

Answer:

. A homogeneous mixture of a solid in a gas

5 0
3 years ago
In which one element replaces a similar element in a compound
ExtremeBDS [4]
<h3><u>Question</u><u>:</u><u>-</u></h3>

In which one element replaces a similar element in a compound?

<h3><u>Answer</u><u>:</u><u>-</u></h3>

A single-replacement reaction

<h3><u>Explanation:</u><u>-</u></h3>

A single-replacement reaction is a reaction in which one element of a compound is replaced by another.

8 0
2 years ago
If 5.10 g of acetic acid is reacted, how many grams of water can form?
svlad2 [7]
To determine how much water can form would depend on what the acetic acid is reacting with. However, a very common reaction of acetic acid that leads to the formation of water is the condensation that occurs during the esterification process. We can react acetic acid with an alcohol, such as methanol, and form the ester and water.

CH₃CO₂H + CH₃OH → CH₃CO₂CH₃ + H₂O

The mole ratio of water to acetic acid is 1:1. We can now use the mass of acetic acid to find the moles, which we can convert to moles of water:

5.10 g CH₃CO₂H / 60 g/mol = 0.085 mol CH₃CO₂H x 1 mol H₂O/1 mol CH₃CO₂H = 0.085 mol H₂O

0.085 mol H₂O x 18 g/mol = 1.53 g H₂O

In the reaction provided, assuming the reaction goes to completion, 5.10 g of acetic acid can form 1.53 g of water.
6 0
3 years ago
Recycling plants sort material by their volume and melting point. Machines will do this quickly so large amounts of material can
Dennis_Churaev [7]

Answer:

Density

Explanation:

Intensive properties are those properties that do not depend on the size of the system or on the amount of matter in the system.

If materials are being sorted out for recycling, then materials can be sorted in accordance with their different densities and packed as such, this is quite a convenient way of sorting out the materials for recycling, hence the answer above.

6 0
3 years ago
Other questions:
  • The formation of a gas or a precipitate may be evidence for a ___________.
    15·1 answer
  • Help answer the questions above
    10·2 answers
  • For fusion reaction to happen, matter needs to be in which of the following states?
    7·2 answers
  • How does knowing the reactants and ______ help you classify a chemical reaction ?
    7·2 answers
  • Lungs function as part of the __________ system and the __________ system.
    12·2 answers
  • Nitrogen dioxide is used industrially to produce nitric acid, but it contributes to acid rain and photochemical smog. What volum
    12·1 answer
  • PLEASE HELP WILL MARK YOU AS BRAINLEST
    9·1 answer
  • Many metals react with acids to produce hydrogen gas. A certain reaction produces 32.6 L of hydrogen gas at STP. How many moles
    12·1 answer
  • 10. The statement that no two electrons in the same atom can have the
    5·1 answer
  • 8. A wave has a frequency of 46 Hz and a wavelength of 2.1 meters. What is the speed of the wave?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!