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3 years ago

BRAINLIEST + 20 POINTS FOR BEST ANSWER!!!

Chemistry

2 answers:

liq [111]3 years ago

4 0

Each type of electromagnetic radiation have been matched to their descriptions as follows:

Ultraviolet light A) Given off by very hot objects, such as the sun

Gamma rays B) Given off by radioactive substances

Microwaves C) Used in radar and to heat food

X‒rays D) Used in the medical field to see bone structure

Zina [86]3 years ago

4 0

Answer :

Ultraviolet light - (A) Given off by very hot objects, such as the sun

Gamma rays - (B) Given off by radioactive substances

Microwaves - (C) Used in radar and to heat food

X-rays - (D) Used in the medical field to see bone structure

Explanation :

Electromagnetic waves : It is a wave in which two vectors are vibrating mutually perpendicular to each other and in direction of the wave. The two vectors are electric field and magnetic field.

The gamma-rays, x-rays, ultraviolet-rays, infrared-rays, microwaves and radio-waves are the electromagnetic waves.

Ultraviolet light : It is a form of light that is not visible to the human eye. It is given off by very hot objects such as sun. The U.V light are harmful for living beings.

Gamma rays : It is arising from the radioactive decay of atomic nuclei. It has shortest wavelength waves and imparts high photon energy can pass through most forms of matters because they have no mass.

Microwaves : It is a wave having wavelength range 0.001-0.3 m is shorter than that of normal radio wave but greater than of infrared wave. It is used in the radar and to heat the food.

X-rays : It is a high energy wave and very short wavelength. It has ability to pass through many materials. It is used in the medical field to see the bone structure.

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A certain electrolyte solution contains 1 gram of salt for every 8 grams of sugar and every 200 grams of water. If the sugar to

12345 [234]

Answer:

The resulting solution contains approximately 666 g of water.

Explanation:

In the initial solution we have:

1g salt : 8g sugar : 200g water

This means that the ratios are:

$\frac{salt}{sugar} = \frac{1}{8} \\\\\frac{sugar}{water} = \frac{8}{200} =\frac{1}{25}$

In the final solution we have:

5g salt: xg sugar: yg water

The new ratios are:

$\frac{salt}{sugar} = \frac{3}{8} \\\\\frac{sugar}{water} = \frac{1}{50}$

Now we can calculate the amount of sugar in the final solution:

$\frac{salt}{sugar} = \frac{5}{x} =\frac{3}{8} \\\\X = 13.333 g$

Finally, we calculate the amount of water:

$\frac{sugar}{water} = \frac{13.333}{y} = \frac{1}{50} \\y = 666.667 g$

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3 years ago

Cuando viajo, me gusta comprar recuerdos.

kaheart [24]

Answer:

to buy souvenirs

give me big brain

Explanation:

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2 years ago

The first order reaction A → B, has k = 2.10. If the initial concentration of reactant A is 1.500 M, how long will it take [A] =

Semenov [28]

Answer:

$ln( \binom{at}{ao}{} ) = - kt$

Explanation:

$ln( \binom{0.6}{1.5} ) = - 2.1t$

$ln(0.4) = - 2.1t$

T = 0.436.

I used the formula for first order reaction.

I hope you get this.

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3 years ago

A ridged steel tank filled with 62.7L of nitrogen gas of 85.0L atm

mylen [45]

The final gas pressure : 175.53 atm

<h3>Further explanation</h3>

Maybe the complete question is like this :

A ridged steel tank filled with 62.7 l of nitrogen gas at 85.0 atm and 19 °C is heated to 330 °C while the volume remains constant. what is the final gas pressure?

The volume remains constant⇒Gay Lussac's Law

<em>When the volume is not changed, the gas pressure in the tube is proportional to its absolute temperature </em>

$\tt \dfrac{P_1}{T_1}=\dfrac{P_2}{T_2}$

P₁=85 atm

T₁=19+273=292 K

T₂=330+273=603 K

$\tt P_2=\dfrac{P_1\times T_2}{T_1}\\\\P_2=\dfrac{85\times 603}{292}\\\\P_2=175.53~atm$

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Maria owns a bakery and bakes many different types of yeast breads. One day she notices that the bread she baked is flat and doe

Novay_Z [31]

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