Ask question

Ask question

All categories

2 years ago

13

Which is a form of heat transfer that is reduced by using a potholder when taking a hot dish out of an oven? Please answer quick

ly, it's a test.

1 answer:

Angelina_Jolie [31]2 years ago

3 0

Answer:

i belive your talking about Conduction

Explanation:

if im

wrong comment

You might be interested in

After you swallow, food travels from your mouth to your stomach. Through which organ does food pass between the mouth and the st

Illusion [34]

Your answer is B) the esophagus.
Your esophagus is located in your throat between your mouth and your stomach.

8 0

3 years ago

Read 2 more answers

Which of the following compounds is usually

goblinko [34]

The answer is C which is PbSo

8 0

2 years ago

A hydrogen-like ion is an ion containing only one electron. The energies of the electron in a hydrogen-like ion are given by the

yan [13]

Answer:

The ionization energy (in kJ/mol) of the helium ion is 21,004.73 kJ/mol .

Explanation:

$E_n = -(2.18 10-18 J)\times \frac{Z^2}{n^2}$

Z = atomic mass

n = principal quantum number

Energy of the electron in n=1,

$E_1= -(2.18 10^{-18} J)\times \frac{4^2}{1^2}=-3.488\times 10^{-17} J$

Energy of the electron in n = ∞

$E_{\infty}= -(2.18 10^{-18} J)\times \frac{2^2}{\infty ^2}=0 J$

Ionization energy of the $He^+$ ion:

$I.E=E_{infty}-E_1=0-(-3.488\times 10^{-17} J)=3.488\times 10^{-17} J$

$I.E=3.488\times 10^{-20} kJ$

To convert in into kj/mol multiply it with $N_A=6.022\times 10^{23} mol^{-1}$

$I.E=3.488\times 10^{-20} kJ\times 6.022\times 10^{23} mol^{-1}=21,004.73kJ/mol$

3 0

2 years ago

Read 2 more answers

What inspired Mendeleev to create his organization for the elements

const2013 [10]

Dimitri Mendeleev was inspired primarily by the work of Antoine Lavoisier and his work on writing the first extensive list of known elements. Lavoisier also collaborated in the construction of the metric system and worked to develop a better nomenclature for chemical compounds which parts are still used today.

7 0

3 years ago

How many mL of .450 M HCL is needed to neutralize 30mL of .150 M Ba(OH)2

Aleks04 [339]

You need .556M HCL to neutralize that

7 0

2 years ago