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Aleks [24]
3 years ago
13

A valid lewis structure of ________ cannot be drawn without violating the octet rule. select one:

Chemistry
1 answer:
andrew11 [14]3 years ago
6 0
<span>Selenium has 6 valence electrons, shares four of them with the four F atoms and has a pair of electrons left over, so has l0 electrons in its outer energy level. Choice A</span>
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Which of the following are types of muscle? *<br> Tendon<br> Cardiac<br> Smooth<br> skeletal
Wewaii [24]

Answer:

i'm pretty sure that the smooth,skeletal,and the cardiac are muscles.hope that helps!

Explanation:

3 0
3 years ago
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A student has a balloon that looks shiny like a metal and wants to perform an experiment to determine if it contains any metal.
zheka24 [161]

Answer:

Charge the balloon, hold it near an electroscope, and determine if the electroscope leaves move.

Explanation:

The gold leaf electroscope is an instrument used to detect if a body is charged. It has two gold leafs suspended from a brass stem in a vacuumed glass jar and connected to a metal cap(Toppr).

When the test body is allowed to touch the metal cap, a change in the size of the leaves shows whether the body is charged or not.

Since we are suspecting the balloon to be made up of a metal; metals can be charged. We can test if there is really a charge on the balloon by bringing it near an electroscope to see if the electroscope moves.

3 0
2 years ago
Which statement tells what happens during the rock cycle when rocks undergo great heat and pressure? A. Igneous rock is formed.
balu736 [363]
<span>B. Metamorphic rock is formed</span>
3 0
3 years ago
liam uses a machine that counts waves on a metal cable. The machine counts 25 waves in 2 seconds. what is the frequency of the w
Softa [21]
Frequency is defined as the number of waves per second. In this machine 25 waves pass in one second.
We need to calculate the number of waves that pass a particular point during one second.
During 2 seconds -25 waves
Therefore in one second - 25/2 = 12.5 waves/s.
1 wave per second has the unit Hertz (Hz)
Therefore answer is 12.5 Hz
7 0
3 years ago
When energy is transformed, some is wasted. What is a common form of wasted energy in some energy transformations? (Think about
tresset_1 [31]

Answer:

Eletrical

Explanation:

The electric transfers 70% of the input energy to kinetic energy 30% is wasted output energy in the form of thermal energy and sound.

4 0
2 years ago
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