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gladu [14]
4 years ago
13

When performing a gram stain, it is necessary to remove crystal violet stain from any gram negative bacteria on the slide. Micro

biologists use a decolorizing solution to accomplish this. A common recipe is equal parts 95% ethanol and acetone. How many mL of water would you need to add if you have 98% ethanol and want to end up with 500 mL of decolorizer?

Chemistry
1 answer:
Paladinen [302]4 years ago
5 0

Answer: mL of water that should be add

3.826mL

Explanation:

Check attachment

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Prospectors are considering searching for gold on a plot of land that contains 2.45 g of gold per bucket of soil. If the volume
makvit [3.9K]

Answer:

13.2 g of gold

Explanation:

We'll begin by converting 5.25 L to ft³.

This can be obtained as follow:

Recall:

1 L = 0.0353 ft³

Therefore,

5.25 L = 5.25 × 0.0353

5.25 L = 1.85×10¯¹ ft³

From the question given above,

2.45 g of gold is present in 5.25 L ( i.e 1.85×10¯¹ ft³) of soil.

Therefore, Xg of gold will be present in 1 ft³ of soil i.e

Xg of gold = 2.45/1.85×10¯¹

Xg of gold = 13.2 g

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8 0
4 years ago
Which neutral atom is isoelectronic with N-3?
Airida [17]

Answer:

The trick here is to realize that the nitride anion, N3− , is isoelectronic with neon, Ne , the noble gas that shares a period with nitrogen, N . In other words, the nitride anion has the same number of electrons as neon.J

Explanation:

5 0
2 years ago
How many unpaired electrons would you expect for the complex ion: [fe(nh3)6]2+?
GarryVolchara [31]
The N from NH3 forms a coordinate covalent bond with the metal iron as in this case. The iron itself is at the "center" of the ligate complex ion. Since the net ionic charge is at 2+, it can be said that there is one pair of unpaired electrons for <span>[fe(nh3)6]2+.</span>
4 0
3 years ago
Read 2 more answers
3. (10 Points) You buy a helium balloon of 14 Liters for your friend's birthday and
vesna_86 [32]

Answer: picture shows work for # 1,2,4,5,7

Explanation:

number 3: as the pressure in the volume decreases, the volume increases causing it to expand and eventually blow.

number 6: because the temperature and the amount of gas don’t change, these terms don’t appear in the equation. What Boyle’s law means is that the volume of a mass of gas is inversely proportional to its pressure. This linear relationship between pressure and volume means doubling the volume of a given mass of gas decreases its pressure by half.

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7 0
3 years ago
Convert 10erg into joule​
Luden [163]

Answer:

0.000001 joule

Explanation:

brainlest?

5 0
3 years ago
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