Describe the direction heat always flows in

1 answer:

iogann1982 [59]2 years ago

4 0

Heat flows from one object to another by conduction, convection or radiation, depending on the physical state of the medium through which it must flow. Heat always flows from a region of high temperature to a region of lower temperature. Without a temperature difference, there can be no heat flow.

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At a certain temperature, the rate constant for this reaction is 5.64×10−4 s−1 . Calculate the half-life of cyclopropane at this

oee [108]

Answer:

$t_{1/2}= 20.47\ minute$

Explanation:

given,

constant rate for the reaction(k) = 5.64 × 10⁻⁴ s⁻¹

to calculate the half life = ?

$t_{1/2} = \dfrac{0.693}{k}$

$t_{1/2} = \dfrac{0.693}{5.64\times 10^{-4}}$

on solving the above equation

$t_{1/2} = 1228.72 s$

$t_{1/2} = \dfrac{1228.72}{60}$

$t_{1/2}= 20.47\ minute$

hence, the half-life of cyclopropane at this temperature = $t_{1/2}= 20.47\ minute$

5 0

2 years ago

Atoms seldom exist as independent particles in nature because...

ExtremeBDS [4]

<h3><u>Answer;</u></h3>

C) atoms are more stable when they combine with other atoms

<h3><u>Explanation</u>;</h3>

Atoms are the smallest particles of an element that can take part in a chemical reaction.
<em><u>Atoms seldom exist as independent particles in nature. Nearly all substances are made up of combinations of atoms that are held together by chemical bonds, which are forces of attractions between the nuclei and valence electrons of different atoms that join the atoms together.</u></em>

3 0

2 years ago

which of the following is accurate in describing the placement and classification of iodine? a. iodine is located in period 5, g

Elden [556K]

A. iodine is located in period 5, group 17 and is classified as a nonmetal

Group is the column, period is the raw.

8 0

2 years ago

How fast should a girl of 35 kg run so that her kinetic energy becomes 700J<br> of?

Kipish [7]

V^2 = 700J/0.5*35kg

V = square root of 40

v = 6.324 m/s

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2 years ago