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
kicyunya [14]
3 years ago
13

20 poll

Chemistry
1 answer:
aleksley [76]3 years ago
5 0

Answer: n=15.56moles

Explanation:

PV = nRT

where  

P is pressure in atmospheres

V is volume in Liters

n is the number of moles of the gas

R is the ideal gas constant = given as (0.0821L -atm/k-mol

PV = nRT

n= PV/RT

n= (1.5 X 230)/ (0.0821  X 270)

n= 15.56 moles

You might be interested in
How are stars and comets different?
ehidna [41]
The answer is letter C.

Because we classify something as a star when it is: a large ball of gas that undergoes nuclear fusion. Given this definition, a comet is not a star. A comet is a ball of ice and dirt hurtling through space, it shines only because it reflects ligh
3 0
2 years ago
Which of the statements about elements is true?
Jet001 [13]

1. No two elements have the same kind of atom.

Explanation:

The correct of all statement is that no two elements have the same kind of atoms.

Every element have different atoms.

  • Over a hundred elements have been identified by scientists.
  • Atoms are the smallest particles that takes part in chemical reactions.
  • Elements are distinct substances that cannot be split.
  • Atoms of all elements do not have the same mass and volume. Isotopes are examples.
  • It is true that atoms of all elements have different masses and also different volumes.
  • The volume of an atom is function of the number of electrons it contains.

learn more:

Dalton model of the atom brainly.com/question/1979129

#learnwithBrainly

3 0
3 years ago
Read 2 more answers
Which of the following organisms evolved after amphibians?
vovangra [49]

Answer:

Reptiles, marsupials, dogs, and cats

Explanation:

3 0
2 years ago
Read 2 more answers
Titration of 0.824 g of potassium hydrogen phthalate required 38.314 g of naoh solution to reach the end point detected by pheno
melamori03 [73]

1.062 mol/kg.

<em>Step 1</em>. Write the balanced equation for the neutralization.

MM = 204.22 40.00

KHC8H4O4 + NaOH → KNaC8H4O4 + H2O

<em>Step 2</em>. Calculate the moles of potassium hydrogen phthalate (KHP)

Moles of KHP = 824 mg KHP × (1 mmol KHP/204.22 mg KHP)

= 4.035 mmol KHP

<em>Step 3</em>. Calculate the moles of NaOH

Moles of NaOH = 4.035 mmol KHP × (1 mmol NaOH/(1 mmol KHP)

= 4.035 mmol NaOH

<em>Step 4</em>. Calculate the mass of the NaOH

Mass of NaOH = 4.035 mmol NaOH × (40.00 mg NaOH/1 mmol NaOH)

= 161 mg NaOH

<em>Step 5</em>. Calculate the mass of the water

Mass of water = mass of solution – mass of NaOH = 38.134 g - 0.161 g

= 37.973 g

<em>Step 6</em>. Calculate the molal concentration of the NaOH

<em>b</em> = moles of NaOH/kg of water = 0.040 35 mol/0.037 973 kg = 1.062 mol/kg

3 0
3 years ago
Which of the following are examples of chemical changes? Select all that apply.
Natali5045456 [20]

Answer:

b. milk spoiling and c. firecrackers exploding

Explanation:

These are both chemical changes, the composition of them change when this happens and it cannot be reversed

6 0
2 years ago
Other questions:
  • The fact that gold is not brittle is a
    6·1 answer
  • Pickles are preserved by soaking cucumbers in a vinegar solution what are some properties of these pickles
    15·1 answer
  • In a chromatography experiment, chlorophyll pigments are separated using paper. What is the stationary phase in this experiment?
    15·2 answers
  • When the ionic compound ammonium chloride, NH 4 Cl, , dissolves in water, it breaks into one ammonium ion, NHt^ 1+ , one chlorid
    9·1 answer
  • What is used to kill cavities
    12·1 answer
  • How many miles are there if you have 70.5g of Nacl
    7·1 answer
  • I have a block of gold and the density is 13.54g/ml If I cut the block in half what is the density of the smaller pieces of gold
    13·1 answer
  • Coal is a very useful rock that formed over millions of years from the remains of plants. Is coal a mineral?
    12·2 answers
  • You have an unknown compound of Potassium derivatives (KIxOy). This sample contains 17.0g of potassium, and 27.8g of oxygen and
    5·1 answer
  • Which of the following explanations accounts for the fact that the ion-solvent interaction is greater for Li than for K
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!