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Goshia [24]
3 years ago
8

How do you coduct yourself during a lab activity

Chemistry
1 answer:
djyliett [7]3 years ago
3 0
Sanitized indirectly vented chemical splash goggles or safety glasses as appropriate
(meeting the ANSI Z87.1 standard) shall be worn during activities or demonstrations
in the classroom, laboratory, or field, including pre-laboratory work and clean-up,
unless the instructor specifically states that the activity or demonstration does not
require the use of eye protection.
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Cuando viajo, me gusta comprar recuerdos.
kaheart [24]

Answer:

to buy souvenirs

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Explanation:

7 0
2 years ago
Two metals (Metal A and Metal B) are both exposed to a laser which emits photons that have a greater energy than the work functi
Tresset [83]

Answer:

shorter than

equal to

Explanation:

Let us go back to the Einstein photoelectric equation;

KE = E - Wo

Where

KE = kinetic energy of the photoelectron

E = energy of the incident photon

Wo = work function of the metal

But KE = 1/2mv^2

Thus the velocity of the emitted photoelectron  is determined by the kinetic energy of the emitted photoelectron.

Since the work function of metal A is smaller than that of metal B, the kinetic energy of photoelectrons emitted from metal A is greater than that of photoelectrons emitted from metal B . Therefore, the velocity of electrons from metal A is greater than those from metal B.

From de Broglie relation;

λ = h/mv

Where;

λ = de Broglie wavelength

h = Plank's constant

m = mass

v = velocity

Metal A producing electrons with greater velocity will lead to a shorter de Broglie wavelength compared to those from metal B.

The number of photoelectrons ejected is determined by the intensity of the photons and not the energy of the incident photons or the work function of the metals. Since the two metals are exposed to the the same laser, equal number of photoelectrons are produced for metals A and B.

8 0
3 years ago
Each student in Ms. Major's class was given an unknown substance. Ms. Major gave her students a list, shown below, of substances
soldi70 [24.7K]

Answer;

Water 1.0 g/mL 100°C colorless liquid

Explanation:

thats the answer

7 0
4 years ago
Read 2 more answers
Make a He atom with a mass of 4. How many protons did you put in the nucleus?
FrozenT [24]

Answer:

He has two protons

Li electron has one electron in its outermost orbital.

Number of neutrons of nitrogen = seven neutrons

The second shell of boron: 3 electrons.

Explanation:

An atom is composed of electrons, protons and neutrons. The number of neutrons is determined by subtraction of the atomic number from the mass number.

The electronic configuration is already known for each of atoms in these questions according to standard tables.

5 0
3 years ago
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Como puedo clasificarlos
EastWind [94]

<em>Que quieres clasificar?.... Yo te puedo ayudar si quieres pero dime que quieres clasificar.</em>

5 0
3 years ago
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