2 years ago

Why is the use of high-frequency radio waves a beneficial technological advancement

Chemistry

1 answer:

Lynna [10]2 years ago

4 0

Answer:

I think It's C

Explanation:

due to higher waves can get easy transfers and receive those signals for most things, such as radios, TVs, phone signals etc etc

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1. ______is an ion, or molecule that is a proton donor.

Finger [1]

Brønsted Lowry acid is a proton donor (PD), while a Brønsted-Lowry base is a proton acceptor (PA).

Hopefully this helps

6 0

2 years ago

Calculate the percentage by mass of the indicated element in the following compounds. Hydrogen in ascorbic acid, HC6H7O6, also k

Scorpion4ik [409]

Answer: The mass percent of hydrogen in ascorbic acid is 4.5 %

Explanation:

In $C_6H_8O_6$ , there are 6 carbon atoms, 8 hydrogen atoms and 6 oxygen atoms.

To calculate the mass percent of element in a given compound, we use the formula:

$\text{Mass percent of hydrogen}=\frac{\text{Mass of hydrogen}}{\text{Molar mass of ascorbic acid}}\times 100$

Mass of hydrogen = $8\times 1g/mol=8g$

Molar Mass of ascorbic acid = $6\times 12g/mol+8\times 1g/mol+6\times 16g/mol=176g$

Putting values in above equation, we get:

$\text{Mass percent of hydrogen}=\frac{8g}{176}\times 100=4.5\%$

Hence, the mass percent of of hydrogen in ascorbic acid is 4.5 %.

8 0

2 years ago

Please help me, please

kumpel [21]

The temperature of a substance is related to the speed of the substance's particles. So, when the temperature of a substance changes,the speed of the particles also changes. So B.

6 0

3 years ago

Which is most likely to dissolve fastest in water? A. sugar cube B. powdered sugar

leva [86]

Sugar cube is my answer

Hope this helps!
Let me know if i'm wrong.

7 0

3 years ago

Read 2 more answers

Why is hydrogen placed with the elements in group 1a??

N76 [4]

Because it has atomic no. = 1 (according to modern periidic table)

5 0

3 years ago