A reaction that is NOT thermodynamically favored at low temperatures can become thermodynamically favored at high temperatures

a paper clip has a length of 32.3mm. how many paper clips would you need to form a line of paper clips to cover a distance of 1.

nasty-shy [4]

Answer:

89883 paper clips

Explanation:

To solve this problem you need to use conversion factors to work with the same units.

First you should convert 32.3mm to miles:

$32.3mm*\frac{6.2*10^{-7}}{1000mm}=2*10^{-5}miles$

Then you should divide the total distance between the length of a paper clip in miles, so:

$\frac{1.8miles}{2*10^{-5}miles}=89883paperclips$

6 0

3 years ago

One isotope of oxygen has 8 protons and 10 neutrons. Which is the correct reference for this isotope? A. oxygen-18 B. oxygen-2 C

ollegr [7]

The correct reference for this isotope is A. Oxygen-18.

6 0

3 years ago

Read 2 more answers

A flame test of a colorless solution gives a bright yellow color. When reacted with AgNO3 a white precipitate forms that dissolv

hichkok12 [17]

Answer:

The compound is Na2CO3

Explanation:

A flame test of a colorless solution gives a bright yellow color. The yellow color shows the presence of Sodium.

NaX + AgNO3 → AgX + NaNO3

When reacted with AgNO3 a white precipitate.

AgX + HNO3 → AgNO3 + H2O + CO2

A white precipitate will be formed when AgNO3 reacts with Sodium Chloride (NaCl) or Sodium carbonate(Na2CO3). (Also NaF, Na3PO4 are possible).

When HCL is added to the unknown solution, bubbles form.

Forming bubbles means that there is formed CO2 (and H20)

Na2X + 2HCl → 2NaCl + H2O + CO2

To form CO2 there is carbon needed

This shows that X is CO3 and the compound is Na2CO3

<u>To control:</u>

Na2CO3 + AgNO3 → Ag2CO3 + NaNO3

⇒Ag2Co3 is the white precipitate formed

This precipitate Ag2CO3 + HNO3 will disolve in AgNO3, CO2 and H2O

When Na2CO3 reacts with HCl there is formed NaCL together with bubbles ( which is CO2 and H2O).

The compound is Na2CO3

3 0

3 years ago

THESE SHOULD BE 5 SCIENCE QUESTIONS...

lyudmila [28]

1) i’m not positive
2) mall directory
3) mitochondria
4) cell membrane
5) organelles

3 0

4 years ago

A compound with the molecular formula C10H10O4 produces a 1H NMR spectrum that exhibits only two signals, both singlets. One sig

Kamila [148]

Answer:

The attached figure shows the structure of dimethyl terephthalate.

Explanation:

Dimethyl terephthalate is a compound whose formula is C6H4 (COOCH3) 2. It is a diester produced from terephthalic acid and methanol. It is characterized by being a white solid. Another method for the preparation is from p-xylene and methanol, which is characterized by having an oxidation and an esterification.

8 0

4 years ago