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nadya68 [22]
2 years ago
13

Plz help can mechanical waves travel through objects?!?!?

Chemistry
1 answer:
Vladimir79 [104]2 years ago
7 0

Answer:

Mechanical waves travel through matter, causing it to vibrate, expand and contract, move up and down, side to side, or in circles. They include water waves, sound waves, and seismic waves. ... They all travel at the same speed — the speed of light — in a vacuum, but when they come into contact with matter, they slow down.

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Where do you find an elements energy levels
ahrayia [7]
You can find an element's amount of energy level by determining their place on the periodic table. An element's amount of energy levels are represented by which period/ row they are in. For example, Calcium has 4 energy levels. I know this because it is in the fourth period on the table.

Hope this helps!
8 0
3 years ago
If the first isotope has a mass of 259.98 amu and a percent abundance of 35%, what is the percent abundance of the second isotop
brilliants [131]
If it is assumed that there are only two isotopes then the percent abundance needs to add up to 100%

100-35= 65%

The second isotope will have a 65% abundance.
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7 0
3 years ago
What is the name of this compound?<br><br> C6H6-<br> C=O-<br> H
ipn [44]

Answer: Benzaldahyde

Explanation: the C₆H₅- represents the substituted benzene ring and the

CHO should represent the functional group of aldehyde

8 0
3 years ago
Read 2 more answers
2. How much heat is released when 432g of water cools down from 710C to 180C?
nadya68 [22]
The heat released by the water when it cools down by a temperature difference AT

is Q = mC,AT

where

m=432 g is the mass of the water

C, = 4.18J/gºC

is the specific heat capacity of water

AT = 71°C -18°C = 530

is the decrease of temperature of the water

Plugging the numbers into the equation, we find

Q = (4329)(4.18J/9°C)(53°C) = 9.57. 104J

and this is the amount of heat released by the water.
7 0
3 years ago
The concentration of CI ion in a sample of H,0 is 15.0 ppm. What mass of CI ion is present in 240.0 mL of H,0, which has a densi
Doss [256]

Answer:

Mass of solute = 0.0036 g

Explanation:

Given data:

Concentration of Cl⁻ = 15.0 ppm

Volume of water = 240 mL

Mass of Cl⁻ present = ?

Solution:

1 mL = 1 g

240 mL = 240 g

Formula:

ppm = mass of solute / mass of sample ×1,000,000

by putting values,

15.0 ppm = (mass of solute / 240 g) ×1,000,000

Mass of solute = 15.0 ppm ×  240 g / 1,000,000

Mass of solute = 0.0036 g

8 0
2 years ago
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