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2 years ago

People can hear ultrasound easily. A. True B. False

1 answer:

3 0

Ultrasound is sound waves with frequencies higher than the upper audible limit of human hearing. Ultrasound is not different from "normal" (audible) sound in its physical properties, except that humans cannot hear it. ... Ultrasound is used in many different fields.

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NEED HELP!PLEAE WITH CHEMISTRY!

andriy [413]

Answer:

ionic

Explanation:

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2 years ago

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Describe the shapes and relative energies of the s,p,d, and f atomic orbitals?

Mariulka [41]

Relative energies are in the order:

s < p < d < f

And the shape of these orbitals are

s - spherical

p - dumbbell

d - double dumbbell

f - double double dumbbell

6 0

2 years ago

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What is the purpose of a unit conversion?

Nataly [62]

Unit conversion is very important because the rest of the world other than three contries uses the metric system. So, converting unitsis important in science because it uses the metric system. The metric system aremeasurements like cm, m, l, mL, etc.

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3 years ago

Calculate the volume in milliliters of a 0.420mol / L barlum chlorate solution that contains 25.0 g of barium chlorate (Ba(ClO 3

Pachacha [2.7K]

Answer: The volume of barium chlorate is 195.65 mL

Explanation:

To calculate the volume of solution, we use the equation used to calculate the molarity of solution:

$\text{Molarity of the solution}=\frac{\text{Mass of solute}\times 1000}{\text{Molar mass of solute}\times \text{Volume of solution (in mL)}}$

Given mass of barium chlorate = 25.0 g

Molar mass of barium chlorate = 304.23 g/mol

Molarity of solution = 0.420 mol/L

Volume of solution = ?

Putting values in above equation, we get:

$0.420mol/L=\frac{25.0\times 1000}{304.23\times V}\\\\V=\frac{25.0\times 1000}{304.23\times 0.420}=195.65mL$

Hence, the volume of barium chlorate is 195.65 mL

6 0

3 years ago

Formula unit of Magnesium oxide and Calcium bicarbonate and aluminum carbonate plzzzz

Fudgin [204]

Magnesium oxide : MgO

Calcium bicarbonate: Ca(HCO3)2

aluminum carbonate: Al2(CO3)3 or C3Al2O9

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2 years ago