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
ira [324]
3 years ago
14

An unknown homonuclear diatomic gas has a volume of 2.5L at standard conditions of temperature and pressure, and it has a mass o

f 3.571g. What is the molecular formula for the gas
Chemistry
1 answer:
Len [333]3 years ago
3 0

Answer: 16g/mol; O2

Explanation:

The gas has a volume of 2.5L at STP, so the number of moles can be determined as follows.

n=2.5L×1mol/22.4L=0.1116mol

The mass is given to be 3.571g. The molar mass of the unknown gas can be determined by dividing grams by moles.

3.571g/0.1116mol=32.00g/mol

The gas is a homonuclear diatomic gas, so the gas must contain two atoms with a molar mass of 32g/mol/2=16g/mol. This is the molar mass of the element oxygen, so the gas is diatomic oxygen, O2.

You might be interested in
The "Nutrition Facts" on a label of a 16 fluid ounce container of apple juice states that a serving size is 8 fluid ounces conta
kenny6666 [7]

The total of calories is 304 and the total of sodium is 32 milligrams.

<h3>What is serving size?</h3>

The serving size represents a portion of food that is nutritionally appropriate. Due to this, most food containers include more than one serving size, this means they are not intended to be consumed by one person in one sitting.

<h3>How is the serving size related to calories and nutrients?</h3>

Understanding serving size is important because based on this you can determine the number of calories, the amount of sodium, sugar, vitamins, etc. all the container of food has.

<h3>How to calculate the calories and sodium?</h3>

In the case of the apple juice, the total of fluid is 16 ounces but the serving size is 8, which means there are 2 servings per bottle. Let's use this proportion to calculate the calories and sodium.

  • 152 (calories per serving) x 2 servings = 304 calories
  • 16 mg (sodium per serving) x 2 servings = 32 mg of sodium in total

Note: This question is incomplete; here is the possible missing section:

What are the total calories and sodium in this apple juice?

Learn more about calories in: brainly.com/question/2918234

6 0
3 years ago
Devise a three‑step synthesis of the product from 1‑methylcyclohexene
natka813 [3]

The three step synthesis of the product from 1-methyl cyclohexane includes the addition of;

  • C6H5CO3H in CH2Cl2
  • C6H5Li in ether
  • PCC in CH2Cl2.

<h3>Three step synthesis from 1 methyl cyclohexene</h3>

The three steps reaction involves the use of Reagannts such as;

  • Reagent 1: C6H5CO3H in CH2Cl2.
  • Reagent 2: C6H5Li in ether.
  • Reagent 3: PCC in CH2Cl2.

Each step in the synthesis is arranged in the order:

  • Step 1: Epoxide formation
  • Step 2: Nucleophilic addition
  • Step 3: Oxidation of OH group.

Read more on three step synthesis;

brainly.com/question/14596275

5 0
2 years ago
Read 2 more answers
What is the temperature of the mixture formed of 100 g of water with temperature 15c and 250g of water with temperature 50c in a
frez [133]

Hello I am a American person

8 0
4 years ago
PLEASE PLEASE HELP!
valentinak56 [21]

Answer: The number of grams of H_2 in 1620 mL is 1.44 g

Explanation:

According to ideal gas equation:

PV=nRT

P = pressure of gas = 1 atm (at STP)

V = Volume of gas = 1620 ml = 1.62 L  (1L=1000ml)

n = number of moles = ?

R = gas constant =0.0821Latm/Kmol

T =temperature =273K

n=\frac{PV}{RT}

n=\frac{1atm\times 16.2L}{0.0821Latm/K mol\times 273K}=0.72moles

Mass of hydrogen =moles\times {\text {Molar mass}}=0.72mol\times 2g/mol=1.44g

The number of grams of H_2 in 1620 mL is 1.44 g

8 0
4 years ago
Determine the concentration of a solution of sodium hydroxide (NaOH) using a 0.500M Potassium Hydrogen Phthalate (KHP) standard
Svetradugi [14.3K]

Answer:

0.425M NaOH assuming the volume of KHP was 25.50mL and the volume of the NaOH solution was 30.0mL

Explanation:

The KHP reacts with NaOH as follows:

KHP + NaOH → KNaP + H₂O

<em>Where 1 mole of KHP reacts per mole of KNaP</em>

<em />

That means, the moles of KHP added to the NaOH solution = Moles NaOH at equivalence point. With the moles of NaOH and the volume in liters we can find the molar concentration of NaOH.

<em>Assuming the volume added of KHP was 25.50mL and the solution of NaOH contains 30.0mL (0.0300L), the concentration of the NaOH is:</em>

<em />

<em>Moles KHP = Moles NaOH:</em>

25.50mL = 0.02550L * (0.500mol / L) = 0.01275 moles KHP = Moles NaOH

<em>Molarity NaOH:</em>

0.01275 moles NaOH / 0.0300L =

<h3>0.425M NaOH assuming the volume of KHP was 25.50mL and the volume of the NaOH solution was 30.0mL</h3>
7 0
3 years ago
Other questions:
  • How might proper lab techniques impact a scientist work?
    14·1 answer
  • Argon, krypton, and xenon are
    11·1 answer
  • How many kilojoules in 100 grams
    6·1 answer
  • Jeffe is explaining dimensional analysis to a friend. He says that dimensional analysis can be used to convert between units. Wh
    13·2 answers
  • How many moles of oxygen are required to produce 4.62 moles of carbon monoxide that is formed by direct combination of its eleme
    12·1 answer
  • What will happen to a salt water fish if placed in freshwater?
    5·1 answer
  • Weathering and erosion affect the most in the formation of igneous rock. A. True B. False
    10·1 answer
  • What information does the atomic number of an element tell you?
    7·1 answer
  • PLEASE HELP ME ON THIS ​
    14·1 answer
  • How many J of energy would you need in order to heat 252 grams of
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!