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
Westkost [7]
3 years ago
8

The mass % of Ca in CaSO4 is 29.45%. To calculate the mass of Ca present in a 25.6-g sample of this compound, the correct proced

ure is given by _____.
Chemistry
1 answer:
Rufina [12.5K]3 years ago
6 0

Answer:

The correct answer is - 29.45 / 100 x 25.6 = 7.5392 grams

Explanation:

It is given in the question that in 100 gms of CaSO4 there are 29.45 grams of Ca present and there is 25.6 gram of total CaSO4 sample present, So, to calculate the exact value of calcium in this given sample is:

mass of Ca = total amount of sample*percentage of calcium in sample /100

M of Ca =25.6*29.45/100

M of Ca = 7.5392 grams

Thus, the correct procedure is given by 29.45 / 100 x 25.6 = 7.5392 grams

You might be interested in
Draw the major resonance contributors for the enamine shown. do not draw resonance and curved arrows. include formal charges and
Makovka662 [10]

<em>Answer:</em>

There are two major resonance contributors for the en-amine. One contributor have no formal charges, only have one lone pair at N while the other one has positive and negative formal charges.

<em>Explanation:</em>

An en-amine is formed by the condensation reactions of aldehydes or ketone with secondary amine.

The contributor<em> </em>I have no formal charges. It has only one lone pair at Nitrogen atom.

The contributor II has +1 formal charges at N, and -1 formal charges at α Carbon.

Please see attachment. The resonance contributor are given.


Download docx
5 0
3 years ago
4.What type of energy is used to fuel the process of photosynthesis and what type is produced in
mihalych1998 [28]

Answer:

A. light energy is used in photosynthesis and created by respiration

3 0
3 years ago
Amobarbital sodium react with ethanolic sodium hyrooxide
CaHeK987 [17]

Amobarbital (like all barbiturates) works by being incontestible to the GABAA receptor at either the alpha or the beta subunit.

<h3>What is the mechanism of amobarbital?</h3>

Amobarbital (like all barbiturates) works by binding to the GABAA receptor at either the alpha or the beta subunit. These are compulsory sites that are distinct from GABA itself and also distinct from the benzodiazepine binding site.

Amobarbital is a barbiturate classified as having a halfway duration of action, meaning that the effects of the drug can last from 4-6 amobarbital increases the effects of benazepril by apparatus: pharmacodynamic synergism.

So we can conclude that Amobarbital, 5-ethyl-5-isoamyl barbituric acid like all barbiturates.

Learn more about Amobarbital here: brainly.com/question/7237163

#SPJ1

6 0
2 years ago
7. Calculate the net charge of the following atoms.
loris [4]

Answer:

any atom that contains six protons is the element carbon and has the atomic number 6, regardless of how many neutrons or electrons it may have.

Explanation:

6 0
3 years ago
Read 2 more answers
42.What is the source of the electric current produced by a voltaic cell?
jonny [76]
I think is Gonna be C
7 0
3 years ago
Read 2 more answers
Other questions:
  • Write a balanced half-reaction for the oxidation of aqueous hydrazine N2H4 to gaseous nitrogen N2 in basic aqueous solution
    10·1 answer
  • Student have a receipt which calls for 1.15 lb of flour, but, of course, in France you will need to purchase flour in kilograms.
    5·1 answer
  • Which element has the greatest density at STP? Ba, Be, Mg, or Ra?
    15·2 answers
  • Crystals Choose one: A. display asymmetry. B. have an orderly internal arrangement of atoms arranged in a lattice pattern. C. gr
    15·1 answer
  • Which Group 14 element is a metalloid?<br> (1) tin (3) lead<br> (2) silicon (4) carbon
    5·2 answers
  • Choose the correct explanations for the aromaticity of the compound.
    6·1 answer
  • Cuales son las caracteristicas de un atomo
    8·1 answer
  • IS THISS RIGHTTTTT???
    5·2 answers
  • Which one of these elements is the lightest: 1- oxygen , 2- carbon , 3- nitrogen , 4- neon.
    13·1 answer
  • What is meant by isomerism?​
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!