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spin [16.1K]
3 years ago
6

Please help ASAP!!!!!!!

Chemistry
1 answer:
SpyIntel [72]3 years ago
8 0

Answer:

  • Chemists develop safer and more effective fertilizers and pesticides .
  • Chemists develop more productive and safer crops .

Explanation:

  • Agriculture means food producing
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Consider a perfectly insulated and sealed container. Determine the minimum volume in L of the container such that 0.37 L of wate
Nataly_w [17]

<u>Answer:</u> The minimum volume of the container must be 460.54 L.

<u>Explanation:</u>

Density is defined as the ratio of mass and volume of a substance.

\text{Density}=\frac{\text{Mass}}{\text{Volume}}&#10;           ......(1)

Given values:

Volume of water = 0.37 L = 370 mL               (Conversion factor: 1 L = 1000 mL)

Density of water = 1.00 g/mL

Putting values in equation 1, we get:

\text{Mass of water}=(1.00g/mL\times 370mL)=370g

The number of moles is defined as the ratio of the mass of a substance to its molar mass.

The equation used is:

\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}} ......(2)

Given mass of water = 370 g

Molar mass of water = 18 g/mol

Putting values in equation 2, we get:

\text{Moles of water}=\frac{370g}{18g/mol}=20.56mol

At STP conditions:

1 mole of a gas occupies 22.4 L of volume

Applying unitary method:

20.56 moles of water will occupy = \frac{22.4L}{1mol}\times 20.56mol=460.54L of volume.

Hence, the minimum volume of the container must be 460.54 L.

8 0
3 years ago
Oleophilic materials would not be used for ?
Elis [28]

Answer:

An oleophilic material is an entity which exhibits a higher affinity for oil than other solvents. The non-polar nature and ability to form cluster-like structures called micelles are the characteristic properties of oleophilic materials.

plz give brainlist

hope this helped you

6 0
4 years ago
Compare amplitudes, wavelengths, and frequencies of waves
mr_godi [17]

Answer:

The answer is option b.

Explanation:

Amplitude is the distance apart each wave is.

8 0
2 years ago
Do drugs affect the mind?
arlik [135]

The answer is Yes, drugs affect the mind.  

Drugs affects various parts of mind differently , drugs can slow down or speed up the central nervous system. Drugs effects brain areas that are important for life sustaining activity and some drugs also become addictive.

The part of brain that is important for positive forms of motivation, Basal ganglia ,that got affected by overdose of drugs that beside that drug nothing can be pleasurable for the person who is taking the drug .

3 0
3 years ago
When baking soda and vinegar are mixed together bubbles form and the vinegar and baking soda are changed into new chemicals. Is
seropon [69]

Answer:

Its a chemical change.

Explanation:

When baking soda and vinegar are mixed bubbles formed and new product is formed by both reactant. So its a chemical change because in a chemical change new substances are formed.

Chemical change:

The changes, that occur due to change in the composition of a substance and result in a different compound is known as chemical change.

These changes are irreversible

These changes occur due to chemical reactions

These may not be observed with naked eye

Example:

Combustion of fuel or wood: that oil or wood convert into energy, CO2 and ash in case of wood

Boiling of egg: that change the chemical composition of protein in the egg .

The reaction of Hydrogen and oxygen:

H 2 (g)  + O 2  (g) -------------------------------------> 2H 2O  (l)

4 0
3 years ago
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