Rolly Sharda

University of Florida
Subject matter expert chemistry

Biography

Myself Rolly sharda and I have a experience of around 2 yeras.
I have a experience of working as a subject matter expert of chemistry at Teamlease Pvt. Ltd, Gurugram and also have a experience of teaching as PGT chemistry for one session.

Education

BS Physics
University of Florida

Educator Statistics

Numerade tutor for 5 years
445 Students Helped

Topics Covered

The Fascinating Chemistry of Life: Discovering the Building Blocks
Mastering Metabolism 101: A Beginner's Guide
Energy in Thermal Processes
Unlocking the Power of Thermodynamics: A Comprehensive Guide
Energy of a System
Unlocking the Power of Composition: Tips and Techniques
Mastering Chemical Reactions and Stoichiometry for Optimal Results
Understanding Electronic Structure: A Comprehensive Guide
Understanding Chemical Bonding: The Key to Molecular Structure

Rolly's Textbook Answer Videos

02:11
Chemistry and Chemical Reactivity

Decide whether each of the following is water-soluble. If soluble, tell what ions are produced when the compound dissolves in water.
(a) $\mathrm{Na}_{2} \mathrm{CO}_{3}$
(b) $\mathrm{CuSO}_{4}$
(c) $NiS$
(d) $\mathrm{BaBr}_{2}$

Chapter 3: Chemical Reactions
Rolly Sharda
01:52
Chemistry and Chemical Reactivity

Decide whether each of the following is water-soluble. If soluble, tell what ions are produced when the compound dissolves in water.
(a) $\mathrm{Na}_{2} \mathrm{CO}_{3}$
(b) $\mathrm{CuSO}_{4}$
(c) $\mathrm{Pb}\left(\mathrm{NO}_{3}\right)_{2}$
(d) $\mathrm{BaSO}_{4}$

Chapter 3: Chemical Reactions
Rolly Sharda
01:09
Chemistry and Chemical Reactivity

Write a balanced cquation for the reaction of sulfur trioxide gas with water.

Chapter 3: Chemical Reactions
Rolly Sharda
02:30
Chemistry and Chemical Reactivity

Give the periodic group number and number of valence electrons for each of the following atoms.
(a) $C$
(b) $\mathrm{Cl}$
(c) $\mathrm{Ne}$
(d) $\mathrm{Mg}$
(e) $F$
(f) $S$

Chapter 8: Bonding and Molecular Structure
Rolly Sharda
02:03
Chemistry and Chemical Reactivity

Specify the number of valence electrons for $\mathrm{Li}, \mathrm{Ti}, \mathrm{Zn}, \mathrm{Si}$ and Cl.

Chapter 8: Bonding and Molecular Structure
Rolly Sharda
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Rolly's Quick Ask Videos

04:35
Biology

A) The backbone of DNA consists of what?
a.) vertebrae
b.) calcium
c.) sugars and phosphates
d.) sugars
e.) bases
f.) phosphates
g.) phosphates and bases
h.) sugars and bases

B) If one strand of a DNA double helix has the sequence ACTTGC, what is the sequence of the other strand?

C) Transcribe a strand of a DNA double helix with the sequence ACTTGC.

D) When would a cell most likely utilize DNA Polymerase?
a.) G1
b.) Anaphase
c.) Telophase
d.) G2
e.) Prophase
f.) Metaphase
g.) S phase

Rolly Sharda
02:39
Biology

. During DNA replication, the single-strand DNA-binding (SSB)
proteins … A. bind cooperatively to single-stranded DNA and cover
the bases to prevent base-pairing. B. are generally found more on
the leading strand than the lagging strand. C. bind cooperatively
to short hairpin helices that readily form in the single-stranded
DNA. D. prevent the folding of the single-stranded DNA. E. All of
the above.

Rolly Sharda
04:33
Biology

Albinism is a genetic trait caused by a metabolic block in the production of melanin. Individuals with albinism have lowered levels of skin and hair pigmentation, and often have vision problems ranging from light sensitivity to blindness. This is an example of:
A. epistasis.
B. pleiotropy.
C. position effects.
D. complementation

Rolly Sharda
03:39
Chemistry 101

Arrange the following ions in increasing order: Mg2+, Al3+,
Sr2+, Rb+
a. Ionic radii
b. Enthalpy of hydration
c. Hydration number
d. Entropy
e. Solubility in terms of entropy.

Rolly Sharda
08:04
Chemistry 101

For each of the following cells, write a balanced cell redox equation and calculate E°.

1. Ag(s) | Ag2S(s) | S2-(aq) || HClO(aq), H+(aq) | Cl2(g) | Pt

2. Pt | Cr2O72-(aq), Cr3+(aq), H+(aq) || Cl-(aq) | Cl2(g) | Pt

3. Fe | Fe3+(aq) || Cl-(aq) | Hg2Cl2(s) | Hg(l)

Rolly Sharda
06:01
Chemistry 101

The Kjeldahl procedure was used to analyze 256 μL of a solution containing 37.9 mg protein/mL. The liberated NH3 was collected in 5.00 mL of 0.0336 M HCl, and the remaining acid required 6.34 mL of 0.010 M NaOH for complete titration. What is the weight percent of nitrogen in the protein?

Rolly Sharda
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