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serious [3.7K]
3 years ago
12

Please put in order from LARGEST WAVELENGH TO SHORTEST YOU WILL GET BRAINLIEST AND 25 POINTS START FROM TOP TO BUTTON

Chemistry
1 answer:
sleet_krkn [62]3 years ago
3 0
Radio waves
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If molecules move from one place to another inside of a cell, which type of communication is this?
Arada [10]
Hello there.

<span>If molecules move from one place to another inside of a cell, which type of communication is this?

</span><span>C.intracellular, enzyme-linked receptor.
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8 0
3 years ago
How many milligrams of magnesium reacts with excess HCl to produce 31.2 mL of hydrogen gas at 754 Torr and 25.0℃.
Ivanshal [37]

Answer:

There will react 30.9 milligrams of magnesium

Explanation:

Step 1: Data given

Volume of hydrogen = 31.2 mL

Pressure = 754 torr = 754/760 = 0.992 atm

Temperature = 25.0 °C = 298 Kelvin

Step 2: The balanced equation

Mg + 2HCl → MgCl2 + H2

Step 3: Calculate moles of H2

p*V = n*R*T

⇒ with p = the pressure of H2 = 0.992 atm

⇒with V = the volume of H2 = 31.2 mL = 0.0312 L

⇒ with n = the moles of H2 = TO BE DETERMINED

⇒ with R = the gas constant = 0.08206 L*atm/K*mol

⇒ with T= the temperature = 25.0 °C = 298 Kelvin

n = (p*V)/(R*T)

n = (0.992*0.0312)/(0.08206*298)

n = 0.00127 moles

Step 4: Calculate moles of Mg

For 1 mol of Mg we need 2 moles of HCl to produce 1 mol of MgCl2 and 1 mol of H2

For 0.00127 moles of H2 we need 0.00127 moles of Mg

Step 5: Calculate mass of Mg

Mass of Mg = moles of Mg * molar mass of Mg

Mass of Mg = 0.00127 moles * 24.3 g/mol

Mass of Mg = 0.0309 grams = 30.9 mg of Mg

There will react 30.9 milligrams of magnesium

3 0
2 years ago
What mass of aluminum chloride could be made from 8.1 g of aluminum and 4.2 L of chlorine at STP?
posledela
In this problem Al metal is a limiting reactant as it is present in less amount as compared to chlorine gas, Hence, controls the formation of ALCl3. So, the amount of AlCl3 produced is 40.05 grams. Solution is as follow,

3 0
3 years ago
Question: If red dye is added to cold water and blue dye is added to warm water, which dye will
vlada-n [284]

Answer:

Blue dye spreads out quicker

Explanation:

This is because the dye gets spread out by water molecules. Warm water has faster moving water molecules than cold water.

6 0
3 years ago
Read 2 more answers
The mass of a silver bracelet is 2.5 gram, it occupies a volume of 48cm3, what is its density?​
NNADVOKAT [17]

Answer:

The answer is

<h2>0.052 g/cm³</h2>

Explanation:

The density of a substance can be found by using the formula

density =  \frac{mass}{volume} \\

From the question

mass = 2.5 g

volume = 48 cm³

The density is

density =  \frac{2.5}{48}   \\  = 0.052083333...

We have the final answer as

<h3>0.052 g/cm³</h3>

Hope this helps you

3 0
3 years ago
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