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Elza [17]
3 years ago
6

Explain why transition metals do not have a predictable pattern for the

Chemistry
1 answer:
Contact [7]3 years ago
3 0

Explanation:

Many transition metals cannot lose enough electrons to attain a noble-gas electron configuration. In addition, the majority of transition metals are capable of adopting ions with different charges.

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The reaction that will probably power the first commercial fusion reactor is:3 0 H + 2 1 H image from custom entry tool4 2 He +
Lelechka [254]

Answer:

2.8087*10^-12 kJ per mole of reaction (2.8087*10^-12 kJ/mol).

Explanation:

To calculate the energy produced, we need to write a balanced equation for the reaction and determine the change in the masses of the reactants and products. Afterward, we can use the energy equation to determine the energy produced. The balanced equation for the nuclear reaction is shown below:

³₁H + ²₁H ⇒⁴₂He + ¹₀n

The masses of atoms are ³₁H is 3.01605 amu, ²₁H is 2.0140 amu, ⁴₂He is 4.00260 amu, and ¹₀n is 1.008665 amu.

change in mass Δm = (3.01605+2.0140) - (4.00260+1.008665) = 0.0188 amu

Energy produced, E = m*C^2

C is the speed of light = 3*10^8 m/s and 1 amu = 1.66*10^-27 kg

Therefore:

E = 0.0188*1.66*10^-27 * (3*10^8)^2 =  2.8087*10^-12 kJ per mole of reaction.

Therefore, in scientific notation, the energy released is 2.8087*10^-12 kJ/mol

7 0
3 years ago
What object has a mass of 10 grams and a volume of 2 mL
Elena-2011 [213]

Answer:

Destiny = 5 g/ml

Explanation:

The formula for density is d=

Knowing this, divide your mass by volume:

10 g / 2 ml = 5 g/ml

Final answer:

Destiny = 5 g/ml

3 0
3 years ago
Which of the following best describes how forces affect matter?
trapecia [35]

it is b forces hold matter together

A force is a push or pull on an object. Forces usually cannot be seen but their effects can. Nothing moves, changes speed, stops or changes direction without force. Heavier objects need more force to get them to move or change direction.

7 0
3 years ago
Loam is a soil texture that is composed of what
finlep [7]
Loam<span> is </span>soil composed<span> mostly of sand (particle size > 63 µm), silt (particle size > 2 µm), and a smaller amount of clay (particle size < 2 µm)</span>
6 0
3 years ago
What is one effect of convection currents in the mantle?
Pie

Answer:

D

Explanation:

due yo high energy from the ocean to the earth

4 0
3 years ago
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