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
Elina [12.6K]
2 years ago
9

The pressure of a gas is 750 torr when its volume is 400. ml. Calculate the

Chemistry
1 answer:
ololo11 [35]2 years ago
7 0

Answer:

a. 0.66 atm

Explanation:

Pi = 750 torr = 0.99 atm. Pf = ?

Vi = 400 ml Vf = 600ml

Using PiVi = PfVf

Then 400ml × 0.99atm = Pfatm × 600ml

Solving for Pf, we have,

Pf = (400ml × 0.99atm)/600ml

Pf = 0.66atm

You might be interested in
Suppose you used 0.5 M NaOH to titrate your vinegar sample instead of 0.1 M. What effect does the concentration of base added ha
laiz [17]

Answer: the reliability will be worse

Explanation:

Suppose we used 0.5 M NaOH to titrate our vinegar sample instead of 0.1 M.

Now by using 0.5M instead of 0.1M we are increasing the concentration of NaOH,

We know that  the moles used = Volume x concnetration.

so for the same no of moles, if the concentration increases, the volume decreases.

Hence it will consume less NaOH.

now Since the volume decreases, the titration volume of less number will increase the % error.

Therefore the reliability will be worse.      

4 0
2 years ago
what happens to the radius of the atoms of an element as you go towards the right in a row of the periodic table ?
Olegator [25]

Answer:

It decreases

Explanation:

As one moves from left to right on the periodic table, the radius of atoms reduces due to the nuclear pull.

  • The size of an atom estimated by the atomic radius is taken as half of the internuclear distance between the two covalently bonded atoms of non-metallic elements.
  • Across a period, atomic radius decreases progressively from left to right.
  • This is due to the increasing nuclear charge without attendant increase in the number of electronic shell.
7 0
2 years ago
How many structures are possible for a square planar molecule with a formula of ax3y?
Galina-37 [17]

Answer:

Explanation:

Depending upon the relative arrangements of XandY X a n d Y , the square planar molecule AX3Y A X 3 Y shows only the following structure: Hence, only one structure is possible for a square planar molecule with a formula of AX3Y A X 3 Y .

5 0
2 years ago
3) In the Hydrolysis of Disaccharides and Polysaccharides portion of the lab, starch should give one positive iodine test and on
AfilCa [17]

Answer: potassium iodide is the basic test for starch,and the positive test is blue-black coloration, any other test substance which is not starch will give a negative results.

Explanation:

Starch is an example of  polysaccharide  and since the standard test for it is potassium iodide solution, it gives a positive test.

Diasaccharides e.g maltose are reducing sugars.their standard test is BENEDICT test .

Therefore, in the hydrolysis;  starch should give a positve test, while Diasaccharides should give negative rest.

3 0
3 years ago
What do scientists use to deterimine the temperature of a star
lidiya [134]
Measure the brightness of a star through two filters and compare the ratio of red to blue light.
7 0
3 years ago
Other questions:
  • 2 N2 (g) + O2 (g) ---> 2 N2O (g) H= +163.2 kj/mol
    7·1 answer
  • Why is eutrophication harmful to fresh water ?
    9·2 answers
  • Rubbing alcohol is 70.% isopropyl alcohol by volume. how many ml of isopropyl alcohol are in a 1 pint (473 ml) container? 330 ml
    7·1 answer
  • Explain why chlorine has a relative mass of 35.5?
    6·1 answer
  • This reaction is first order with respect to reactant a and second order with respect to reactant b. if the concnetration of a i
    13·1 answer
  • Ca(OH) =CaO + H2O
    12·1 answer
  • Issac Newton là người đã khám phá ra lực gì?
    10·1 answer
  • BRAINLIEST IF ANSWERED CORRECTLY WITH EXPLANATION! HELP PLEASE:)
    15·1 answer
  • Is water a solution?<br><br> no<br><br> yes
    8·1 answer
  • A balance and a graduated cylinder are used to determine the density of a mineral sample. The sample has a mass of 16 g and a vo
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!