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
bazaltina [42]
4 years ago
14

Which of these are correct? ( you can pick more than 1 )

Chemistry
1 answer:
Papessa [141]4 years ago
4 0
I know the first one for sure 

You might be interested in
Hydrogen gas can be prepared by reaction of zinc metal with aqueous HCl:
kow [346]

Answer:

The volume of hydrogen gas generated by given reaction is 9.48 L

Explanation:

Firstly, we calculate the mole of Zinc added, n = 25.5 / 65 = 0.392 mol

With the same equivalent, the mole of generated hydrogen gas will be the same, at 0.392 mol.

Secondly, we get the equation

<em>P . V = n . R . T</em>

with P (pressure, atm), V (volume, litre), n (mole, mol), R (ideal gas constant, 0.082), T (temperature, Kelvin)

So we have to convert the given information to correct unit

P = 742 mmHg = 0.976 atm

T = 15 °C = 288 K

Hence we can calculate the generated volume by

V = n . R . T / P = 0.392 x 0.082 x 288 / 0.976 = 9.48 L

3 0
3 years ago
Cola contains phosphoric acid and carbonic acid. Which is the most likely reason that cola also contains a large amount of sugar
Bumek [7]

Answer:

B. to counteract the sourness of the acids

Explanation:

Edge:) Good luck!

8 0
2 years ago
As the energy level decreases, the size of the orbital:
hoa [83]

Answer:

B or C

Explanation:

When an atom absorbs the right amount of energy, an electron moves from its original orbital to a higher-energy orbital that has a vacancy. Similarly, when an atom emits energy, the electron drops to a lower-energy orbital that has a vacancy.

This is all I could find

6 0
3 years ago
Read 2 more answers
2.37 x 0.004 Sig Fig
NeTakaya

Answer:

The answer is 0.00948

Explanation:

5 0
3 years ago
Read 2 more answers
According to the iupac convention, alkyl substituents on a hydrocarbon chain should be listed in which order?
Scilla [17]

According to the IUPAC convention alkyl substituents on a hydrocarbon chain should be listed in alphabetical without considering prefixes order.

<h3>What is IUPAC convention?</h3>

IUPAC convention of organic chemistry is a method of naming organic chemical compounds as recommended by the International Union of Pure and Applied Chemistry (IUPAC).

The name of the compound is written out with the substituents in alphabetical order followed by the base name (derived from the number of carbons in the parent chain).

Types of IUPAC  Nomenclature of a few important aliphatic compounds:

  1. Alkane
  2. Alkene
  3. Alkyne

Example :

Ethane, which has 2 carbon atoms and 6 hydrogen atoms, with the molecular formula of = C₂H₆

Formation of alkyl group:

Methane (CH₄)  Remove 1 hydrogen (H) convert to methyl (H₃-C-)

Example: Propyl (-CH₃ - CH₂ - CH₂ - )

According to the IUPAC convention alkyl substituents on a hydrocarbon chain should be listed in alphabetical without considering prefixes order.

Learn more about IUPAC convention, Here:

brainly.com/question/14706819

#SPJ4

8 0
2 years ago
Other questions:
  • How many grams of water vapor (H2O) are in a 10.2-liter sample at 0.98 atmospheres and 26°C?
    6·1 answer
  • Hydrazine (N2H4), a rocket fuel , reacts with oxygen to form nitrogen gas and water vapor. The reaction is represented with the
    11·1 answer
  • Cans of regular soda have volumes with a mean of 14.5 oz and a standard deviation of 0.18 oz. What is the maximum "usual" value
    5·1 answer
  • If substances and B are both in the solid phase and are at the same energy level, which of the two substances will need to have
    15·1 answer
  • If the pH is decreased from 7 to 6, it means that the
    5·1 answer
  • Find the rationalising factor for the denominator of the expression 1÷3+ 5<br>​
    9·1 answer
  • 2c+02=2CO2. The moles of co2 produced when 0.25 moles of O2 react is?​
    8·1 answer
  • Identify NaOH (aq) + HNO3(aq) → NaNO3(aq) + H2O(1)
    5·1 answer
  • True or false force cannot be measured
    13·2 answers
  • When you have added as much solute as can dissolve in solvent the solution is called
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!