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Chemistry

1 answer:

xxTIMURxx [149]3 years ago

6 0

Answer:

Rabbbits are scared so if there is an increase in the snake population they would try and hide and run from it bur hawks also prey on rabbits but not every hawk so Im going with bthe snake answer .

Explanation:

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How many grams of cl are in 445 g of cacl2?

RideAnS [48]

<span>284 g First, lookup the atomic weights of all the elements involved. Atomic weight of Calcium = 40.078 Atomic weight of Chlorine = 35.453 Now calculate the molar mass of CaCl2 40.078 + 2 * 35.453 = 110.984 Using that molar mass, calculate how many moles of CaCl2 you have. 445 g / 110.984 g/mol = 4.009586967 mol Since each molecule of CaCl2 has 2 chlorine atoms, multiply the number of moles of CaCl2 by 2 to get the number of moles of Chlorine atoms. 4.009586967 * 2 = 8.019173935 And finally, multiply by the atomic weight of chlorine. 8.019173935 * 35.453 = 284.3037735 Since you have have 3 significant figures in your data, round the result to 3 significant figures, giving 284 grams.</span>

7 0

4 years ago

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polet [3.4K]

Answer:

(upper right) corner of the periodic table to the bottom left corner

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3 years ago

Which electron transition involves the most energy

sertanlavr [38]

Delta E= R[1/n^2 (initial) - 1/n^2 (final) ]

so transition n=3 to n=1 will emit more energy

5 0

3 years ago

A surface wave is a combination of what two waves

Alika [10]

transverse wave and a longitudinal wave

Hope it helps have a blessed day!:)

4 0

3 years ago

Read 2 more answers

Calculate the root mean square (rms) average speed of the atoms in a sample of xenon gas at 0.15 atm and -55c

GrogVix [38]

Answer:
Vrms is 149.7266 m/sec

Explanation:
The root means square velocity of a gas can be calculated as follows:
Vrms = $\sqrt{ \frac{3RT}{M}}$
where:
R is the ideal gas constant = 8.3145
T is absolute temperature = -55 + 273 = 118 degrees kelvin
M is the molar mass of the gas = 131.293 grams = 0.131293 kg

Substituting with these givens in the above equation, we would find that the Vrms is 149.7266 m/sec

Hope this helps :)

7 0

4 years ago