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
Helen [10]
3 years ago
7

I NEED HELP ASAP!!!!!

Chemistry
2 answers:
Mademuasel [1]3 years ago
8 0

<u>Answer:</u>

<u>For 1:</u> The number of moles of ethanol are 11.04 moles

<u>For 2:</u> The volume of chlorine gas at STP for given amount is 33.6 L

<u>Explanation:</u>

  • <u>For 1:</u>

To calculate the number of moles, we use the equation:

\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}

Given mass of ethanol = 508 g

Molar mass of ethanol = 46 g/mol

Putting values in above equation, we get:

\text{Moles of ethanol}=\frac{508g}{46g/mol}=11.04mol

Hence, the number of moles of ethanol are 11.04 moles

  • <u>For 2:</u>

We are given:

Moles of chlorine gas = 1.50 moles

At STP:

1 mole of a gas occupies 22.4 L of volume

So, 1.50 moles of chlorine gas will occupy = \frac{22.4}{1}\times 1.50=33.6L of volume

Hence, the volume of chlorine gas at STP for given amount is 33.6 L

ivann1987 [24]3 years ago
6 0

Answer: 1. 11.04moles

2. 33.6L

Explanation:Please see attachment for explanation

You might be interested in
The nucleus of isotope A of an element has a larger mass than isotope B of the same elemen
konstantin123 [22]

Answer:

B

Explanation:

since isotopeA has bigger mass number

7 0
3 years ago
Chuck has a very detailed model of the solar system where each planet is made out of granite rock. Since his little sister reall
Ilia_Sergeevich [38]

He could be blindfolded and know which was his and which was his sister's. All he would need to do is pick them both up and if they were too big then pick them up one at a time. The lumber might make it harder to tell, but this is a question about physical properties.

So there is a change in mass which for the purpose of this question should be  quite different. His sister's ought to be much lighter than his. He would find it easier to pick up.

8 0
3 years ago
Read 2 more answers
An atomic spectra is like a _________ for an element, in that it is unique for that element and can be used in identification.
adell [148]
Atomic number, because the atomic number is unque to each individua element.
3 0
3 years ago
PLEASE ANSWER FAST!
Paraphin [41]

Answer:

0.36 g/cm3 I hope this helps

3 0
3 years ago
Read 2 more answers
An aluminum kettle weights 1.05 kg and has a heat capacity of 0.9211 J over grams Celsius how much heat is required to increase
Serggg [28]

Answer:

64799.4 J

Explanation:

The following data were obtained from the question:

Mass (M) = 1.05 kg = 1.05 x 1000 = 1050g

Specific heat capacity (C) = 0.9211 J/g°C

Initial temperature (T1) = 23°C

Final temperature (T2) = 90°C

Change in temperature (ΔT) = T2 – T1 =

90°C – 23°C = 67°C

Heat required (Q) =....?

The heat required to increase the temperature of the kettle can b obtain as follow:

Q = MCΔT

Q = 1050 x 0.9211 x 67

Q = 64799.4 J

Therefore, 64799.4 J of heat is required to increase th temperature of the kettle from 23°C to 90°C.

4 0
3 years ago
Other questions:
  • Nitrogen and hydrogen combine to form ammonia in the Haber process. Calculate (in kJ/mole) the standard enthalpy change DH° for
    13·2 answers
  • What kind of electrons are involved in chemical bonding?
    8·1 answer
  • It is important that water is a powerful solvent because ____?
    5·1 answer
  • Use Coulomb's Law to calculate the energy of a copper ion and an oxide ion at their equilibrium ion-pair separation distance.
    10·1 answer
  • What is Keg for the reaction N2 + 3H2 = 2NH2 if the equilibrium
    6·1 answer
  • 2. Which number is not a coefficient in the equation,
    5·2 answers
  • What are five different types of air pollutant each
    10·1 answer
  • Which properties of glass are a promblem in transporting food and drink?​
    14·2 answers
  • How many iron (II) ions are there in 5.00 g of FeSO4?
    6·1 answer
  • Nuclear power plants use a fission reaction of uranium to generate heat to power a generator. A fission reaction is a chain reac
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!