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
Mama L [17]
3 years ago
14

Single-replacement reactions

Chemistry
1 answer:
Ber [7]3 years ago
5 0
The answer is C. 

example: 3NaCl + Al ----> AlCl₃ + 3Na
You might be interested in
HELP!!! WRITE THE CORRECT ISOTOPE NOTATION FOR EACH OF THE FOLLOW:
kakasveta [241]
The answer is 4 an atom
4 0
3 years ago
Based on the equation, how many grams of Br2 are required to react completely with 36.2 grams of AlCl3?
s2008m [1.1K]

Answer:

65.08 g.

Explanation:

  • For the reaction, the balanced equation is:

<em>2AlCl₃ + 3Br₂ → 2AlBr₃ + 3Cl₂,</em>

2.0 mole of AlCl₃ reacts with 3.0 mole of Br₂ to produce 2.0 mole of AlBr₃ and 3.0 mole of Cl₂.

  • Firstly, we need to calculate the no. of moles of 36.2 grams of AlCl₃:

<em>n = mass/molar mass</em> = (36.2 g)/(133.34 g/mol) = <em>0.2715 mol.</em>

<u><em>Using cross multiplication:</em></u>

2.0 mole of AlCl₃ reacts with → 3.0 mole of Br₂, from the stichiometry.

0.2715 mol of AlCl₃ reacts with → ??? mole of Br₂.

∴ The no. of moles of Br₂ reacts completely with 0.2715 mol (36.2 g) of AlCl₃  = (0.2715 mol)(3.0 mole)/(2.0 mole) = 0.4072 mol.

<em>∴ The mass of Br₂ reacts completely with 0.2715 mol (36.2 g) of AlCl₃ = no. of moles of Br₂ x molar mass</em> = (0.4072 mol)(159.808 g/mol ) = <em>65.08 g.</em>

4 0
3 years ago
Draw a lewis structure for hnc and assign the non-zero formal charges to each atom. draw the lewis structures with the formal ch
Yuliya22 [10]
<span>Answer: H-C-N H-N-C C-H-N Notice that C-H-N is the same as N-H-C just written backwards. ( i.e. they have the same connectivtiy.) You can exclude the last one with H in the middle since H has two bonds and 4 electrons around it. At this point you couldn't differentiate between the first two, so I would give you the connectivity in such a problem, which in this case is H-C-N.</span>
3 0
3 years ago
Examine the molecular structure of this lipid. What type of lipid is this?
artcher [175]
The correct answer is Phospholipid
3 0
3 years ago
An unknown noble gas has a density of 5.84 g dm-3 at STP. Calculate its molar mass, and so identify the gas.
bagirrra123 [75]

The noble gas is Xenon and its molar mass is 131 g/mol.

<h3>What is the molar mass of the noble gas?</h3>

The molar mass of the noble gas is determined as follows;

Let molar mass of unknown gas be M, and mass of gas be m

Density of the noble gas, ρ = 5.8 g/dm³

density = m/V

At STP;

  • temperature, T = 273.15 K
  • pressure, P = 1 atm
  • molar gas constant, R = 0.0821 L.atmK⁻¹mol⁻¹

From ideal gas equation:

PV = nRT

where n = m/M

PV = mRT/M

M = mRT/PV

M =  0.0821 * 273.15 * 5.84/1

Molar mass of the noble gas = 131 g/mol

The noble gas is Xenon which has molar mass approximately equal to 131 g/mol.

Learn more about molar mass at: brainly.com/question/837939

#SPJ1

6 0
1 year ago
Other questions:
  • A pure substance containing only one kind of ____________. an element is always uniform all the way through (homogeneous). an el
    6·1 answer
  • A rectangular box has a length of 12 cm, a width of 20 cm, and
    7·1 answer
  • Unscramble the word. Lncsuoicno
    10·1 answer
  • Heat, gas production, and color change can all be evidence of chemical change.
    8·1 answer
  • the mass by mass percentage of a solution is 20%. find the mass of the solute dissolved in 500g of solution​
    7·1 answer
  • Silver chromate, Ag.CrO, has a Kp of 9.00x 1012 Calculate the solubility in mol/L of silver chromate a) 1.31 x 10M d) 2.08 x 10
    11·1 answer
  • How do the circulatory and the excretory systems work together to maintain the human body on a daily basis?
    10·1 answer
  • How is the kinetic energy of the particles that make up a substance different after is changes state
    12·1 answer
  • The dog will eat more food to store fat and grow more hair.
    9·1 answer
  • Sodium Carbonate + Nitric Acid --------&gt; ___________________ + _____________ + _______________
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!