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3 years ago

If you have 3 moles of calcium carbonate, how many grams of calcium bicarbonate are formed?

Chemistry

1 answer:

Flura [38]3 years ago

7 0

Answer:

hhjcioz xlioyudiyyxyisrupautwtritu regards Roy

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What do carbon, hydrogen, and oxygen atoms have in common?

horsena [70]

Answer:

electrons located outside the nucleus

Explanation:

electrons are said to be located outside the nucleus of an atom and are in orbit around the nucleus.

according to Bohr in 1913.

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1 year ago

What is one wavelength?

Dmitry_Shevchenko [17]

Answer:

It is the distance between two compressions or two rarefactions.

Explanation:

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3 years ago

What is the point within the earth where seismic waves originated brainly

Marysya12 [62]

answer: focus or hypocenter

enplanation: when energy release at the focus, seismic waves travel outward from that point in all directions.

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3 years ago

Give an example of two elements that would form a covalent bond

Tamiku [17]

<span>Hydrogen carbon and oxygen commonly form covalent bonds.
</span>
HOPE THIS HELPS!

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3 years ago

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 $Q_{2} -W = (100 -59.47=40.53$

6 0

3 years ago