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In a fractional distillation, is the composition of the vapor just above the surface of the liquid the same as the vapor near the thermometer bulb? Explain.

In a laboratory, 1.55 mg of an organic compound containing carbon, hydrogen and oxygen is burned for analysis. This combustion resulted in the formation of 1.45 mg of carbon dioxide and 0.890 mg of water. What is the empirical formula for this compound?

What is qualitative analysis and explain the procedure of detecting hydrogen in an organic compound,

Write the eqn involved in detecting hydrogen and carbon in an organic compound

Explain the principle involved in detecting carbon and hydrogen in an organic compound

What is organic Compound

Two vectors are given by a = 9.4i + 1.3j and b = 5.5i + 3.4j. Find (a)|a × b|, (b)a · b, (c)(a + b) · b, and (d) the component of a along the direction of b?

n this week’s forum, please critically discuss the structural characteristics of steel and steel-concrete composite bridges. Include in your discussion the advantages steel offers to the construction of large structures and why it is preferred as a structural material in bridges.

Two vectors are given by a = 6.9i + 1.0j and b = 6.0i + 7.0j.Find...
(a)|a × b|
(b) a · b
(c) (a + b) · b
(d) the component of a along the direction of b?

Three vectors are given by 3i + 3j - 3k, = -i +4j +2k, and = 2i + 2j + k. Find:

The component of    along  

An object-spring system oscillates with an amplitude of 3.5 cm. Ifthe spring constant is 270 N/m and object has a mass of 0.50 kg,determine each of the following values.
(a) the mechanical energy of the system
(in J)

(b) the maximum speed of the object
(in m/s)

(c) the maximum acceleration of the object
(in m/s2)

A 0.20-kg object is oscillating on a spring with a spring constant of k = 15 N/m. What is the potential energy of the system when the object displacement is 0.040 m, exactly half the maximum amplitude?

Use dimensional analysis to obtain the SI unit of k in terms of fundamental quantities in the expression below. a is the acceleration, x is the displacement, m is the mass of the oscillating object, and k is the spring constant