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Serjik [45]
3 years ago
11

What are two systems that use radio waves

Chemistry
1 answer:
Goshia [24]3 years ago
7 0
Mobile radio communication
Broadcasting
Navigation systems
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If you stretch back a rubber band and release it, it shoots across the room. What type of energy conversion has occurred?
MAVERICK [17]
<span>Elastic to mechanical is the energy conversion that occurs. Elastic, the pulling back and stretching of the rubber band, mechanical is the release!</span>
5 0
3 years ago
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Using a mixture of water, sand, and chemicals under high pressure to free tightly held oil and natural gas is known as ____.
uysha [10]
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4 0
3 years ago
How many moles are in 325mL of 1.25M (NH4)2SO4
mote1985 [20]

Answer:

n_{solute}=0.406mol(NH_4)_2SO_4

Explanation:

Hello,

In this case, since the molarity is defined as the ratio of the moles of the solute to the volume of the solution in liters:

M=\frac{n_{solute}}{V_{solution}}

For the given volume and molarity, we solve for the moles of ammonium sulfate (solute) as shown below:

n_{solute}=M*V_{solution}=1.25\frac{mol}{L}*325mL*\frac{1L}{1000mL}  \\\\n_{solute}=0.406mol(NH_4)_2SO_4

Best regards.

4 0
4 years ago
Determine the equilibrium pH and speciation (concentration of each species) of the following two solutions. Neglect activity cor
irina [24]

Answer:

HCl solution - H30+ and Cl ions. pH 3

NaCl - Na+ and Cl-. pH 7

Explanation:

a) HCl solution - the hydrogen ion combines with water molecule to form the hydronium molecule which is responsible for acidity. The chloride ion is also found in solution.

pH = -log [H+] = -log(10^-3) = 3

b) NaCl 10-3 g. The solid dissocates in water forming the Na+ and Cl- ions. None of these ions affect pH

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4 years ago
23°C = ______ K<br><br> -250<br> 296<br> 123<br> 23
strojnjashka [21]

Answer:

296

Explanation:

6 0
4 years ago
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