3 years ago

Which of the following led to the Middle English language of Chaucer?

Chemistry

1 answer:

sergejj [24]3 years ago

3 0

Answer:

i believe it the last one

Explanation:

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State the number of neutrons in an atom of Ne-20 and the number of neutrons in an atom of Ne-22. choose two answers * 1 point Ne

saveliy_v [14]

Answer:

Ne 20: 10

and

Ne 22: 12

Explanation:

Ne-20:

N = A - Z = 20 - 10 = 10 neutrons

Ne-22:

N = A - Z = 22 - 10 = 12 neutrons

N: number of neutrons

A: mass number

Z: atomic number

8 0

3 years ago

A hydrogen only spectrum

nikklg [1K]

Answer:

yes

Explanation:

6 0

3 years ago

Determine the number of moles of the anhydrous salt present after heating, assuming that the contents of the aluminum cup after

lara31 [8.8K]

Answer:

0.2 moles, assuming weight of dried salt

Explanation:

In order to determine the number of moles, we need to be aware of the mass of the substance in question.

Assuming the mass of the dehydrated $KAl(SO_{4} )_{2}.H_{2} O$ is 50g.

No. of moles = mass of substance/ molar mass of the substance.

= $\frac{50g}{39+27+32*2+16*4*2\\)g/mol}$

= 0.2 moles moles.

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3 years ago

A sulfur containing amino acid is

SVETLANKA909090 [29]

Cysteine and methionine contain sulfur.

6 0

3 years ago

How many moles of potassium are needed to react completely with 7.50 mol of chromium (III) oxide? Show work.

irina1246 [14]

Answer:

45 mol

Explanation:

First you need to balance the equation:

6K + Cr2O3 = 3K2O + 2Cr

the proportion of the coeficients of potassium and chromium oxide is 6 to 1 so we need to multiply 7.5 by 6 to get 45.

7 0

3 years ago