3 years ago

How are scientist able to protect people from tornadoes

Chemistry

1 answer:

marusya05 [52]3 years ago

7 0

They cant physically. But what they can do is predict the patterns within the weather and how the outcome will be

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How many grams of ZnO would you need to produce 50 g of ZnCl2? (The atomic mass of Zn is 65.38 and of Cl is 35.45.) ZnO(s) + 2HC

marta [7]

.37 grams of ZnO

hope this helps!

4 0

3 years ago

The pH of 0.50 M benzoic acid is 2.24. Calculate the change in pH when 2.64 g of C6H5COONa is added to 38 mL of 0.50 M benzoic a

meriva

Answer:

1.93

Explanation:

Moles of C $_{6}$ H $_{5}$ COOH = 38/1000 × 0.50 = 0.019mol

Moles of C $_{6}$ H $_{5}$ COONa = Mass/Molar mass = 2.64/144.10 = 0.018321mol

Final pH = pKa + log([C $_{6}$ H $_{5}$ COONa]/[C $_{6}$ H $_{5}$ COOH]

= -log Ka + log(mols of C $_{6}$ H $_{5}$ COONa]/mols of C $_{6}$ H $_{5}$ COOH

= -log(6.5 × 10^(-5)) + log (0.018321/0.019)=4.17

change in pH = final - initial pH

= 4.17 - 2.24

=1.93

5 0

4 years ago

Which of the following is not an example of weathering?

Rina8888 [55]

Answer:

Destruction of rocks at convergent boundaries

Explanation:

Duuuuuuuuude. Dude.

Let's think for a sec, because this confused me.

Acid rain is chemical weathering. It has acid in it, so it weathers rocks. (Ewwww.)

Frost wedging is a major duh, because frost can weather rocks.

Oxidation reactions are a yes yes because it becomes oxidized.

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2 years ago

When a heavy atom is split in a fission reaction, the daughter nuclei that form have higher binding energies than the parent nuc

AlladinOne [14]

True because the parents have less energy now

7 0

3 years ago

Read 2 more answers

The chemical combination of two or more different kinds of atoms in fixed amounts is called a(n)?

gladu [14]

Ur answer is compound hope this help XD

4 0

3 years ago