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3 years ago

When an electron is added, the ion is called?______

Chemistry

2 answers:

torisob [31]3 years ago

8 0

Answer:

Anion

Explanation:

Positive ions are called cations: they give out

Negative ions are called anions: they always receive

Andrei [34K]3 years ago

6 0

Answer

anion

Explanation:

When an electron is added or gained, it forms a negative ion called the anion.

This makes it have more electron than the proton making it negatively charged .

Examples are chloride, bromide, fluoride which has minus 1 has their charge

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1. An electric power plant uses energy from burning coal to generate steam at 450 °C. The plant is cooled by 20 °C water

kap26 [50]

Answer:

Explanation:

Efficiency of the electric power plant is $e=1-\frac{T_{2}}{T_{1}}$

Here Temperature of hot source $T_{1} = 450^{o}C=450+273=723 K$

and Temperature of sink $T_{1} = 20^{o}C=20+273=293 K$

Hence the efficiency is $e=1-\frac{293}{723}=0.5947=59.47%$

Now another formula for thermal efficiency Is

$e_{therm}=\frac{Q_{1}-Q_{2}}{Q_{1}}=\frac{W}{Q_{1}}$

Here QI is the of heat taken from source 100 MJ ; Q2 of heat transferred to the sink (river) to be found

W is the of work done and W = QI -Q2

Hence From $e_{therm}=\frac{Q_{1}-Q_{2}}{Q_{1}}=\frac{W}{Q_{1}}$

$W=e(Q_{1})=(0.5947)(100)=59.47MJ$

Hence the of heat transferred to the river Is $Q_{2} -W = (100 -59.47=40.53$

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3 years ago

What is the electron configuration of bromine whose atomic number is 35

Vanyuwa [196]

1s22s22p63s23p64s23d104p5 is the answer

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2 years ago

What is the composition of an isotope of calcium (atomic number 20)?

beks73 [17]

Answer:

i think c

Explanation:

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3 years ago

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Which of the following temperature scales contains an absolute zero? Fahrenheit (°F) Celsius (°C) Kelvin (K)

melamori03 [73]

Kelvin (K) is the only scale that has a numeral value assigned to absolute zero.

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2 years ago

Nitrifiers are bacteria

Delicious77 [7]

Answer:

(D.) Nitrifiers are bacteria that generate nitrites or nitrates.

Explanation:

In the nitrogen cycle which occurs in nature, ammonia and ammonium compounds in the soil from organic sources and are converted to nitrites and nitrates by aerobic microorganisms.

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2 years ago