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m_a_m_a [10]
3 years ago
7

____ Are subatomic particles found in the nucleus and carry positive electrical charge.

Chemistry
2 answers:
Angelina_Jolie [31]3 years ago
7 0
C. Protons
Protons are subatomic particles found in the nucleus and carry positive electrical charge.
Lorico [155]3 years ago
3 0

Answer:

C

Explanation:

there's no need to rush just calm down baby!!!

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the chemical compound C2F4 is used to make PTEE (Teflon). How manyC2F4 molecules are in 485 kilograms of this material?
monitta

Answer:

molecules=2.92x10^{27}moleculesC_2F_4

Explanation:

Hello,

In this case, we use the Avogadro's number to compute the molecules of C2F4 whose molar mass is 100 g/mol contained in a 485-kg sample as shown below:

molecules=485kgC_2F_4*\frac{1000gC_2F_4}{1kgC_2F_4} *\frac{1molC_2F_4}{100gC_2F_4}*\frac{6.022x10^{23}molecules C_2F_4}{1molC_2F_4}  \\\\molecules=2.92x10^{27}moleculesC_2F_4

Best regards,

5 0
3 years ago
hurry please! avogadro's law relates the volume of a gas to the number of moles of gas when temperature and pressure are constan
DIA [1.3K]

Answer:

Option B. 4 moles of the gaseous product

Explanation:

Data obtained from the question include:

Initial volume (V1) = V

Initial number of mole (n1) = 2 moles

Final volume (V2) = 2V

Final number of mole (n2) =..?

Applying the Avogadro's law equation, we can obtain the number of mole of the gaseous product as follow:

V1/n1 = V2/n2

V/2 = 2V/n2

Cross multiply

V x n2 = 2 x 2V

Divide both side by V

n2 = (2 x 2V)/V

n2 = 2 x 2

n2 = 4 moles

Therefore, 4 moles of the gaseous product were produced.

5 0
3 years ago
Calculate the number of molecules?
Ann [662]
87.33 X 10^15 molecules
8 0
3 years ago
WHAT CAUSES THE MOVEMENT OF THESE AIR PARTICLES IN SOUND WAVES?
SVETLANKA909090 [29]
A vibrating string can create longitudinal waves as depicted in the animation below.



The answer is C) vibrations
8 0
3 years ago
Which of the following statements describes sound energy?
Galina-37 [17]

Answer:

C.

Explanation:

8 0
2 years ago
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