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Rudik [331]
3 years ago
9

Using the example of an ambulance, explain the Doppler Effect. Infer why the doppler effect can or cannot occur in all waves. PL

EASE ANSWER ILL PICK BRAINLEIST TO THE FIRST ACTUAL ANSWER
Chemistry
1 answer:
kozerog [31]3 years ago
6 0

Answer:

When the ambulance is coming towardss you the waves are smushed together and sound higher pitched but then it passes you and when tracveling away the waves are scretched out so the whee whoo sounds lower and that is because of the doppler effect

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calculate the atomic mass of element X, if it has 2 naturally occurring isotopes with the following masses and natural abundance
jeka57 [31]
Hey there!

To find this, you should:

1) multiply the percentage (but in a decimal form) of each isotope by the mass.
2) add all your masses together
3) make sure to check for significant figures and you’re done!

Hope this helps :)
4 0
3 years ago
Silicon is in the same group of the Periodic Table as carbon. The compound
iragen [17]

Answer:

SiH

Explanation:

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4 0
3 years ago
A solution has a hydronium concentration of 1.3 x 10^-3M. What is the ph of the solution?
Serjik [45]

Answer:

2.89

Explanation:

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7 0
3 years ago
00000044m<br> 300000km/s <br> Both in scientific notation
cupoosta [38]

Answer:

4.4 × 10^-7

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Explanation:

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5 0
2 years ago
Calculate the molality of a 20.0 percent by weight aqueous solution of nh4cl. (molecular weight: nh4cl = 53.5)
cestrela7 [59]
Unfortunately the data provided doesn't include the DENSITY of the ammonium chloride solution and molarity is defined as moles per volume. So without the density, the calculation of the molarity is impossible. But fortunately, there are tables available that do provide the required density and for a 20% solution by weight, the density of the solution is 1.057 g/ml.  
So 1 liter of solution will mass 1057 grams and the mass of ammonium chloride will be 0.2 * 1057 g = 211.4 g. The number of moles will then be 211.4 g / 53.5 g/mol = 3.951401869 mol. Rounding to 3 significant digits gives a molarity of 3.95.  
Now assuming that your teacher wants you to assume that the solution masses 1.00 g/ml, then the mass of ammonium chloride will only be 200g, and that is only (200/53.5) = 3.74 moles.   
So in conclusion, the expected answer is 3.74 M, although the correct answer using missing information is 3.95 M.
8 0
3 years ago
Read 2 more answers
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