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2 years ago

In the following list, only is not an example of a chemical reaction

Chemistry

1 answer:

Sladkaya [172]2 years ago

4 0

There is no pictu-res...sss

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Sanjay is learning about the elements that make up Earth’s crust. Ms. Richards, his Earth science teacher, gives him an element

oksano4ka [1.4K]

Answer:

Iron

Hope this helps! Stay safe!

(Plz vote me as brainliest)

3 0

3 years ago

Which are processes that add to the genetic differences in siblings? Cheek all that apply. Interphase Independent assortment Cyt

dangina [55]

Answer:

Crossing over Mitosis

Explanation:

A process called meiosis ensures siblings share just about 50% of their genotype. That's how siblings can have different DNA. Meiosis is a form of cell division that is only used to produce a special category of cells, called gametes.

3 0

2 years ago

Which are characteristics of metals that result from their bonding? Check all that apply.

ioda

Answer:

Conduct Electricity and Are malleable

Explanation:

7 0

3 years ago

Read 2 more answers

How do submarine volcanoes affect autotrophic bacteria?

Anarel [89]

Answer:A large number of autotrophic bacteria—bacteria that produce their own food—live near hydrothermal vents and submarine volcanoes.

These bacteria are considered chemosynthetic, meaning they produce food from chemical reactions usually involving carbon dioxide, oxygen, or hydrogen

5 0

2 years ago

Microwave ovens work by irradiating food with microwaves, which are absorbed by the water molecules in the food and converted to

snow_tiger [21]

Answer:

$7.45\times 10^{26}$ photons are emitted per second in a $1\times 10^3$ Watt microwave oven.

Explanation:

The expression for the power is:-

$Power=\frac{Energy}{Time}$

Also, $E=n\times \frac{h\times c}{\lambda}$

Where,

n = the number of photons

h = Plank's constant having value $6.626\times 10^{-34}\ Js$

c = the speed of light having value $3\times 10^8\ m/s$

$\lambda$ = the wavelength of the light

So,

$Power=\frac{n}{Time}\times \frac{h\times c}{\lambda}$

Thus, the expression for photons per second is:-

$\frac{n}{Time}=\frac{Power\times \lambda}{h\times c}$

Given that:-

Power = 10³ Watt

( 1 cm = 0.01 m)

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So,

$Photon/sec=\frac{10^{3}\times 0.148}{6.626\times 10^{-34}\times 3\times 10^8}=7.45\times 10^{26}$

$7.45\times 10^{26}$ photons are emitted per second in a $1\times 10^3$ Watt microwave oven.

7 0

3 years ago