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
mina [271]
3 years ago
15

Sodium Oxide (Na2O) can react with hydrochloric acid (HCl) to produce sodium chloride (NaCl) and water (H2O) according to the fo

llowing equation: Na2O + 2HCl -> 2NaCl + H2O How many total atoms are present before and after the reaction? A) 2 before and 2 after
B) 3 before and 3 after
C) 5 before and 5 after
D) 7 before and 7 after
Chemistry
2 answers:
nika2105 [10]3 years ago
6 0

The answer is D) 7 before and 7 after

Just had this question

Sonbull [250]3 years ago
5 0

Answer:

D) 7 before and 7 after

Step-by-step explanation:

  Na₂O   +  2HCl    ⟶    2NaCl      +   H₂O

3 atoms + 4 atoms ⟶ 2×2 atoms + 3 atoms

        7 atoms         ⟶    4 atoms   + 3 atoms

        7 atoms         ⟶            7 atoms

There are seven atoms present before and after the reaction.


You might be interested in
How many electrons can occupy an orbital
8_murik_8 [283]

Answer:

2 electrons

Explanation:

There are five 3d orbitals, each of which can hold up to 2 electrons, for 10 total electrons. An orbital is described by the principle quantum number, n, the angular momentum quantum number, l, and the magnetic quantum number, ml.

3 0
2 years ago
Which property describes the way substances react with other substances to form new substances?
maxonik [38]

Answer:

Chemical Property describes the way substances react with other substances to form new substances.

Explanation:

Hope it helps you

3 0
3 years ago
Read 2 more answers
PLEASE HELP ME (JOULES)
Svetllana [295]

Answer:

The answer is not 9.9 i used that and got it wrong

Explanation:

8 0
2 years ago
How many neutrons are in the element sulfur-34
igomit [66]

Answer:

8 neutrons

Explanation:

6 0
3 years ago
Read 2 more answers
Does anyone know how to do this?
Sloan [31]

Answer

find out the number of moles and use the molar ratio (numbers in front of formulas (in this case they are all 1) to determine how many moles of each product you are going to get theoretically

n=m/M is the equation to use to get moles here

30.8 gm/32.04 g/mol=0.9612 moles of the methanol and also of the formaldehyde so

0.9612 moles of the formaldehyde x molar mass (M) 30.73 g/mol= 29.54 gm which is the theoretical yield you already have the actual yield of 24.7 gm

then divide the actual by the theoretical to get the % yield which is 83.6%

Explanation:

4 0
3 years ago
Other questions:
  • PLEASE HELP!!
    13·2 answers
  • Write the equation for the dissolution of sodium carbonate in water as found in your laboratory guide.
    5·1 answer
  • during the electrolysis of an aqueous solution of sodium nitrate, a gas forms at the anode, what gas is it?
    12·1 answer
  • Determine what ions are present when the following dissociates or ionizes in water. Include states of matter.
    10·1 answer
  • What would happen to an object if the force of gravity on Erath decreased by half
    5·1 answer
  • Describe each of the 3 main<br> domains used to classify living<br> things.
    15·1 answer
  • Perience
    11·1 answer
  • Define the chemical reaction?​
    7·2 answers
  • Plz download the doc and answer its due in 20 mins like bro wth
    9·2 answers
  • Pop is made up of three major parts (water, carbon dioxide, and sugar). Assume that all other ingredients are present in insigni
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!