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Inga [223]
3 years ago
7

A hot metal plate at 150°C has been placed in air at room temperature. Which event would most likely take place

Chemistry
1 answer:
Sergio [31]3 years ago
6 0

Answer:

Molecules in both the metal and the surrounding air will start moving at higher speeds.

Explanation:

Temperature is defined as a measure of the average kinetic energy of the molecules of a body.

The greater the temperature of a body, the greater the average kinetic energy of the molecules of the body and the greater the speed of the particles of the body.

A metal at 150°C will witness an increase in the average kinetic energy of its molecules, the molecules will speed up as temperature increases.

Similarly, the hot metal plate releases heat to the surrounding air molecules by radiation causing the surrounding air molecules to experience an increase in temperature and average kinetic energy. Thus the air molecules surrounding the metal hot plate also speed up.

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gamma rays have an approximate wavelength of 1.0x10^-13 meters. what is the approximate energy of a gamma-ray?
Bogdan [553]

Answer:

E = 19.89 × 10⁻¹³ J

Explanation:

Given data:

Wavelength of gamma ray= 1.0× 10⁻¹³ m

Energy of gamma ray = ?

Solution:

Formula:

E = h c/λ

h = plancks constant  = 6.63× 10⁻³⁴ js

c = speed of light = 3 ×10⁸ m/s

by putting values,

E = 6.63× 10⁻³⁴ js × 3 ×10⁸ m/s /1.0× 10⁻¹³ m

E = 19.89 × 10⁻²⁶ J.m/ 1.0× 10⁻¹³ m

E = 19.89 × 10⁻¹³ J

8 0
3 years ago
Which of the following would be a good solvent choice when preparing your sample for 1H NMR?
user100 [1]

Answer:

e. None of the answer choices

Explanation:

  • The solvents used for 1HNMR analysis are chloroform D (CDCl3), and acetone D6 (CD3COCD3) and deuterium oxide (D2O).
  • And here any of these three nans are listed in the given option so that we can say that none of the answers are correct.
  • so correct answer is e. None of the answer choices

6 0
4 years ago
Charged particles from the Sun follow Earth’s magnetic field to the poles where they create the _______________.
gizmo_the_mogwai [7]

im guessing the Aurora Borealis

4 0
3 years ago
To what volume (in mL) would you need to dilute 25.0mL of a 1.45 m solution of Kcl to make a 0.0245m solution of KCl
dezoksy [38]

Answer:

The answer is

<h2>1479.60 mL</h2>

Explanation:

In order to calculate the volume needed we use the formula

V_2 =  \frac{C_1V_1}{C_2}

where

C1 is the concentration of the stock solution

V1 is the volume of the stock solution

C2 is the concentration of the diluted solution

V2 is the volume of thevdiluted solution

From the question

C1 = 1.45 M

V1 = 25 mL

C2 = 0.0245 M

So we have

V_2 =  \frac{1.45 \times 25}{0.0245}   =  \frac{36.25}{0.0245}  \\  = 1479.59...

We have the final answer as

<h3>1479.60 mL</h3>

Hope this helps you

4 0
3 years ago
When methane (CH4) burns, it reacts with oxygen gas to produce carbon dioxide and water. The unbalanced equation for this reacti
Delvig [45]

Answer:

CH4+2O2 = CO2+2H2O

7 0
3 years ago
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