is it true or false that all atom´s electrons can interact with the electrons of other atom to form bonds

Answers

Answer 1

Answer: false. only valence electrons can bond with other atoms' electrons.

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What amount in moles does 242 L of carbon dioxide occupy at 1.32 atm and 20 degrees C

Answers

Answer:

13.28 mol.

Explanation:

We can use the general law of ideal gas: PV = nRT.

where, P is the pressure of the gas in atm (P = 1.32 atm).

V is the volume of the gas in L (V = 242.0 L).

n is the no. of moles of the gas in mol (n = ??? mol).

R is the general gas constant (R = 0.0821 L.atm/mol.K).

T is the temperature of the gas in K (T = 20.0° + 273 = 293.0 K).

∴ n = PV/RT = (1.32 atm)(242.0 L)/(0.0821 L.atm/mol.K)(293.0 K) = 13.28 mol.

Magnetite, Fe3O4, is a ferrimagnetic, rather than a ferromagnetic material that contains different iron isotopes. How is it different from ferromagnetic minerals? A) It has opposing magnetic moments.
B) It can be spontaneously magnetized.
C) Its magnetization is temperature dependent.
D) The electrons in the iron spin in the same direction.

Answers

Answer:

Option A

Explanation:

Ferromagnetic materials have the property to be attracted to magnets while ferrimagnetic material is the magnetic property of materials having atomic moments aligned in opposite directions. In ferrimagnetic material as the magnetic moments are aligned in opposite direction, they cancel out the magnetic field.

Answer: A. It has opposing magnetic moments.

Explanation:

Magnetite , Fe3O4 is Ferrimagnetic and quite different from Ferromagnetic minerals because it's magnetic moments are aligned in opposite directions.

How many atoms of calcium are in a unit of calcium phosphate whose formula is Ca3(PO4)2?A) one C) three

B) two D) four

Answers

The correct answer is answer choice C, three. In the formula Ca3 (P O4)2, there are 3 atoms of calcium (Ca), 2 atoms of phosphorus (P), and 8 atoms of oxygen (O). You can tell this by looking at the subscripts (or numbers, in this case, since you can't type subscripts). The subscript applies to the number directly beside it. Furthermore, if you have parentheses with a number beside it, just distribute. In this problem, we have (P O4)2.

(P O4) 2 Given
P2 O8 Distribute
We now have 2 atoms of phosphorus and 8 atoms of oxygen.

This problem has decided to be nice and just ask for calcium, so we don't have to distribute. All you have to do for this problem is look at the subscript beside Ca, which is 3. Therefore, the correct answer is C.

Answer: c

Explanation:brainliest

Which sequence of coefficients should be placed in the blanks to balance this equation

Answers

Answer:

2 ... and 1

Explanation:

Hope this is right / helps

Answer:

It could either be 1 or 2. Depending on the question.

Explanation:

The landscape feature that forms when plate movement forces the crust to bend downward is a.......

Answers

It is called a syncline.

I think it's a syncline

How to find wavelength

Answers

Know the formula for calculating wavelength. To find the wavelength of a wave, you just have to divide the wave's speed by its frequency. ...State the formula in correct units. ...Plug the known quantities in the equation. ...Solve.

Answer:

Use the formula v=fλ Divide the velocity by the frequency to find the wavelength. (Make sure you add the unit λ for your final answer)

V: Velocity

F: Frequency

λ: Wavelength

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