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3 years ago

Why black body rodiat

Chemistry

1 answer:

JulsSmile [24]3 years ago

3 0

Answer:

Because it has a darker pigment?

Explanation:

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What energy transfer is occurring when a battery-powered toy rolls across the floor? Stored mechanical energy is converted to th

Norma-Jean [14]

Answer:

Stored chemical energy is converted to mechanical energy.

Explanation:

A battery posses chemical energy: this is chemical potential energy, which means that it is stored in the chemical bonds of the compounds in the battery. When the compounds in the battery react some bonds are broken and others are formed; at the end some energy is released and electricity is produced.

So, the chemical energy is first transformed into electrical energy.

A motor in the toy is able to transform that electrical energy into motion of gears and axes, which is how the wheels can spin. This motion of gears, axes and wheels is mechanical energy (kinetic energy).

Then, as you see, in that way the stored chemical energy in the battery is transfered to mechanical energy of the toy as it rolls across the floor thanks to the spin of the wheels.

8 0

3 years ago

Read 2 more answers

below is a list of some weak acids: name formula pka molar mass acetic acid h(c2h3o2) 4.76 60.052 butanoic acid h(c4h7o2) 4.83 8

Genrish500 [490]

(i) Volume of point Naon to reach equivalence. = 24.0mL

(ii) volume of Naon used to reach 50% T = 12.0mL

(iii) PKA of an unknown acid = 4.8

(iv) moles of acid reacted = moles of NaOH

man/molar mass = 0.269g/MW = Molarity x volume

0.269g/MW = 0.09560 mol/K x 24. 0× $10^{-3}$ /K

MW = 0.269g/0.09560 mol x 24.0x $10^{-3}$

MW = 117.24g mol-1

(v) In matching the given table of molar masses. with obtained man matches with that, we get that it of hexanoic acid.

unknown acid = hexanoic acid

Titration is used to determine the amount of a substance present by reacting it with a known amount of another substance. For example, the molar mass of an acid can be found by titrating it with a base solution of known concentration. Your unknown solid is an acid. This is dissolved in water and phenolphthalein indicator is added and titrated to the endpoint with standard NaOH solution. Unknown acids are monobasic. There is only one acidic hydrogen per molecule.

Learn more about Molecular weight here:-brainly.com/question/837939

#SPJ4

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2 years ago

Any two uses of mixtures

romanna [79]

Answer:

Any two used of mixtures are 1) sand and water 2) sugar and salt

Explanation:

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3 years ago

In the double replacement reaction between na2so4 (aq) and bacl2 (aq), will a precipitate form?

bagirrra123 [75]

A precipitate will form since BaSO₄ is insoluble in water.

8 0

4 years ago

What is the correct answer please

Anestetic [448]

Answer:

I think it's the second answer --If you increase the acidity..

I hope answer I can answer your question!

7 0

3 years ago

Why black body rodiat​

Why black body rodiat