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morpeh [17]
3 years ago
4

Atoms from which two elements would form ionic bonds

Physics
1 answer:
Andreyy893 years ago
8 0

Answer:

Explanation:

Ionic bonds are formed by transfer of electrons between metal and non metals. Electronic configuration of calcium: Calcium atom will lose two electron to gain noble gas configuration and form calcium cation with +2 charge.

hope this helps

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The length of the assembly decreases by 0.006 in. when an axial a- force is applied by means of rigid end plates. Determine
Triss [41]

Answer:

(a) The magnitude of the applied force is (0.0001524k) Newton

(b) Corresponding stress in the steel core = (0.0001524k/area) Newton per meter square

Explanation:

(a) From Hookes law of elasticity,

Force applied = force constant (k) × compression

compression = 0.006 in = 0.006 × 0.0254 = 0.0001524 meter

Force applied = k × 0.0001524 = (0.0001524k) Newton

(b) Stress = Force applied (Newton)/area of steel core (meter square) = (0.0001524k/area) Newton per meter square

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A 20kg metal block is placed on a horizontal surface. The block just begins to slide when horizontal force of 100N is applied to
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See the photo

Explanation:

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Which one of the following statements indicates the result of Kepler's astronomical calculations?
garri49 [273]
The correct answer for the question that is being presented above is this one: "<span>c. Planets orbit in elliptical patterns; a planet's orbit covers equal areas in equal amounts of time; planets' orbits are shorter or longer depending on their distance from the Sun."</span>

Here are the following choices:
a. Planets orbit in elliptical patterns; the bigger the planet, the more gravitational pull; a planet's gravitational pull is stronger or weaker depending on its distance from the Sun.

b. A planet's orbit covers equal distances in equal amounts of time; the speed of a planet's orbit depends on its distance from the Sun; the bigger the planet, the slower it moves.

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Two identical cylinders, A and B, contain the same type of gas at the same pressure. Cylinder A has twice as much gas as cylinde
cricket20 [7]

Answer:

D. TA < TB

Explanation:

From general gas equation, we know that:

PV  = nRT

PV/R = nT

where,

P = pressure of gas

V = volume of gas

R = General gas constant

T = temperature of gas

n = no. of moles of gas

<u>FOR CYLINDER A</u>:

PV/R = (nA)(TA)  _____ eqn (1)

<u>FOR CYLINDER B</u>:

PV/R = (nB)(TB)  _____ eqn (2)

Because, Pressure, Volume are constant for both cylinders.

Comparing eqn (1) and (2)

(nA)(TA) = (nB)(TB)

It is given that the amount of gas in cylinder A is twice as much as the gas in cylinder B. This means the number moles in cylinder A are twice as much as no. of moles in cylinder B.

nA = 2(nB)

using this in eqn:

2(nB)(TA) = (nB)(TB)

TA = (1/2)(TB)

<u>TA = 0.5 TB</u>

Therefore it is clear that the correct option is:

<u>D. TA<TB</u>

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hope this helped:)</span>
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