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2 years ago

Mengapakah gelung pemanas di dalam cerek elektrik berada di dasar cerek?

Chemistry

1 answer:

shepuryov [24]2 years ago

5 0

English, please. Does this have something to do with an electrical barometer

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Determine the frequency of light with a wavelength of 4.257x10^-7cm

TEA [102]

Answer:

frequency of light is $70.47\times 10^{15} \ per\ second$

Explanation:

Given

wavelength of light = $4.257\times 10^{-7}\ cm = 4.257\times 10^{-7} \times 10^{-2} \ m= 4.257\times 10^{-9}\ m$

Speed of Light = $3\times 10^8 \ m/s$

∴ Frequency of Light = $\frac{\textrm{Speed of Light}}{\textrm{wavelength}}=\frac{3\times 10^8}{4.257\times 10^{-9}}= 70.47\times 10^{15} \ per\ second$

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3 years ago

The process of burning means to react a substance with <br><br> is oxygen

Musya8 [376]

Answer: Combustion Reaction

Explanation: A substance reacts with oxygen

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2 years ago

There is a close relation between forest<br>and wildlife.

evablogger [386]

Answer:

habitat

Explanation:

wild animal need

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3 years ago

In the following compound (HCl) How many electrons are gained and lost by each atom?

Verizon [17]

Explanation:

In HCL, one positive atom is given to chlorine from hydrogen so that it can complete it's octate. chlorine take one electron from hydrogen.

In NaCl, Sodium takes one electron from chlorine to complete its orbit with eight electrons. Chlorine gives one electron to sodium.

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2 years ago

A 20.0 g piece of a metal is heated and place into a calorimeter containing 250.0 g of water initially at 25.0 oC. The final tem

BartSMP [9]

Answer:

$Q_{metal} = -6799\,J$

Explanation:

By the First Law of Thermodynamics, the piece of metal and water reaches thermal equilibrium when water receives heat from the piece of metal. Then:

$Q_{metal} = - Q_{w}$

$Q_{metal} = m_{w} \cdot c_{p,w}\cdot (T_{1}-T_{2})$

$Q_{metal} = (250\,g)\cdot \left(4.184\,\frac{J}{g\cdot ^{\textdegree}C} \right)\cdot (25\,^{\textdegree}C - 31.5\,^{\textdegree}C)$

$Q_{metal} = -6799\,J$

6 0

3 years ago

Read 2 more answers

Mengapakah gelung pemanas di dalam cerek elektrik berada di dasar cerek?​

Mengapakah gelung pemanas di dalam cerek elektrik berada di dasar cerek?