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
elena55 [62]
3 years ago
9

what volume of hydrogen gas is evolved from a reaction between 0.52 g of Na and water? This gas is collected at 20 C and 745mmHg

Chemistry
1 answer:
guapka [62]3 years ago
6 0
The  volume of  hydrogen  gas  that evolved  is   calculated  as  follows
by  use  of   ideal  gas  equation

that  is  PV = nRT
P=745  mm hg
V= ?
R(gas  constant)= 62.36 L.mm hg/mol.k
T= 20 + 273 = 293 k
n=number  of  moles which is calculated as  follows
find the  moles  of Na  used
= 0.52/23=0.023  moles

write the reacting equation
2Na +2H2O =2NaOH +H2
by  use  of reacting  ratio  between  Na : H2  which  is  2:1  therefore  the mole  of H2 = 0.023/2 =0.0115  moles

by  making  the  volume  the   subject  of  the formula
v=nRT/P
V= (0.0115 x 62.36  x 293) / 745  = 0.283 L


You might be interested in
Which is a base unit used in the metric system?
DaniilM [7]

Answer:

<h2> Quarts </h2><h2>Litres </h2><h2>Pints </h2><h2>Degrees Fahrenheit. </h2>

ASK for more

4 0
3 years ago
What is the method used to prepare emulsion​
olasank [31]

Answer:

The methods commonly used to prepare emulsions can be divided into two categories

A) Dry gum method

B) Wet gum method

8 0
3 years ago
What is the electron configuration of aluminum?
Bond [772]
 <span>What is the electron configuration of aluminum is </span>1s^2 2s^2 2p^6 3s^2 3p^1.
8 0
3 years ago
What is metal made out of?
maxonik [38]

Explanation:

Scientifically speaking, metals are naturally occurring chemical elements that are typically hard, lustrous, and good conductors of both heat and electricity. Examples include iron, gold, silver, copper, zinc, nickel, etc., but also elements we don't normally think of as metals.

7 0
3 years ago
Methods used by scientists
svet-max [94.6K]

Answer:

scientific method

Explanation:

they use this alot

8 0
3 years ago
Read 2 more answers
Other questions:
  • Hi i need hel does any one know what P3N2 means ??? .-.
    9·1 answer
  • How many total ions are present in 347g of cacl2?
    9·1 answer
  • An atom had a mass of 43 and it also has has 21 electrons
    15·1 answer
  • Write a balanced chemical equation for the fermentation of sucrose (C12H22O11) by yeasts in which the aqueous sugar reacts with
    6·1 answer
  • When 55.0 grams of metal at 75.0°C is added to 100. grams of water at 15.0°C, the temperature of the water rises to 18.7°C. Assu
    14·1 answer
  • Draw the lewis structure for the molecule ch2chch3. how many sigma and pi bonds does it 30) contain
    8·1 answer
  • Black holes are the final stage of what star
    10·2 answers
  • What is the density of a 12-gram sample of zinc with volume of 8.4 cm3? <br><br> pls hurry pls
    11·1 answer
  • Lines of ___________ are also called meridians
    10·1 answer
  • Cerebrospinal fluid of the central nervous system and synovial fluid of joint capsules are both examples of _______.
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!