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topjm [15]
3 years ago
6

2. Record your observations about what happens to a wave when it reaches the boundary between two media.

Chemistry
1 answer:
Taya2010 [7]3 years ago
6 0

the wave bounces back off the first media and returns to it origanal resting place

Explanation:

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Positive and Negative ions attract each-other and form chemical __________
e-lub [12.9K]

Answer:

Changes

Explanation:

When positive and negative ions attract each other it fors a negative chemical changes

7 0
3 years ago
A 10.4 g sample of CaSO4 is found to contain 3.06 g of Ca and 4.89 g of O. Find the mass of sulfur in a sample of CaSO4 with a m
andrey2020 [161]

The mass of sulfur in a sample of CaSO4 with a mass of 65.8 g is 15.50g.

<h3>How to calculate mass of an element in a compound?</h3>

According to this question, a 10.4 g sample of CaSO4 is found to contain 3.06 g of Ca and 4.89 g of O.

This means that the mass of sulfur in the 10.4g of CaSO4 is 10.4g - (3.06g + 4.89g) = 10.4g - 7.95g = 2.45g

Next, we calculate the percent ratio of each element in the compound; CaSO4.

  • Ca = 3.06g/10.4g × 100 = 29.42%
  • S = 2.45g/10.4g × 100 = 23.56%
  • O = 4.89g/10.4g × 100 = 47.02%

According to this question, a sample of CaSO4 with a mass of 65.8 g is given. The mass of each element in this compound is as follows:

  • Ca = 29.42/100 × 65.8g = 19.36g
  • S = 23.56/100 × 65.8g = 15.50g
  • O = 47.02/100 × 65.8g = 30.94g

Therefore, the mass of sulfur in a sample of CaSO4 with a mass of 65.8 g is 15.50g.

Learn more about mass at: brainly.com/question/13672279

#SPJ1

5 0
2 years ago
Give the full electron configuration for nitrogen.
garri49 [273]

Answer:

1s2 2s2 2p3

Explanation:

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3 years ago
(a) What human activity is responsible for the formation of smog and acid rain? (b) What kinds of harm does photochemical smog c
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but u have a good person to talk about that is a bit of an act like I swear to God that

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can you send the invoice to the b account on your website so I just put in a sec and I can send it here and send you the info for my credit card

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3 years ago
Read the reaction and the statement. H2(g) + I2(g) ⇌ 2HI(g) The concentration of H2, I2 and HI are measured as 0.04 M, 0.08 M an
hjlf

Answer:

45467777777777yt3457942

4 0
3 years ago
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