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Taya2010 [7]
3 years ago
13

Why do you think it is a bad idea to use taste, touch, or smell to identify an unknown chemical?

Chemistry
1 answer:
miv72 [106K]3 years ago
4 0

Answer:

Because it can cause health problems or injuries to our sense organs.

Explanation:

Chemicals in the laboratory are made up of different constituents, which may be dangerous or injurious to health. This is the reason why safety measures or precautions have to be taken when working in the laboratory. One of those safety measures is that "one should never use taste, touch, or smell to identify an unknown chemical".

This is so because a chemical that is unknown amounts to the fact that what such chemical contains is unknown, hence, the chemical might have the ability to cause harm or injuries to the sense organ. For example, a conc. acid that is tasted will burn the tongue etc.

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How many grams of hydrogen are in 92 g of ch4o?
IRISSAK [1]
The answer to this question would be: 11.5 grams

The molecular mass of hydrogen is 1, oxygen is 16 and carbon is 12. Then the molecular mass of CH4O would be: 12 + 4(1) + 16= 32.
To find the hydrogen mass, you just need to divide the hydrogen with total mass, resulting in the mass ratio of hydrogen to the compound. Then the amount of hydrogen inside 92 gram of CH4O are: 92grams * (4/32)= 11.5 grams
7 0
3 years ago
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Which composer made it a goal to create compositions that sounded truly american?.
MAVERICK [17]

Given what we know, we can confirm that the composer who made it a goal to create compositions that sounded truly American was Aaron Copland.

<h3>Who was Aaron Copland?</h3>

Aaron Copland was an American composer, among his other disciplines, best known for his jazz-styled music. He went on to win an Oscar award for film composing for the movie The Heiress (1949).

Therefore, we can confirm that the composer who made it a goal to create compositions that sounded truly American was Aaron Copland.

To learn more about music visit:

brainly.com/question/8051042?referrer=searchResults

7 0
3 years ago
What could be done to increase the acceleration of a dog sled? List two possibilities
snow_lady [41]

To increase the acceleration of the dog sled, increase the applied force on the sled and reduce the mass on the sled.

According to Newton's second law of motion, the force applied to an object is directly proportional to product of mass and acceleration of the object.

F = ma

where;

<em>a </em><em>is the </em><em>acceleration </em><em>of the dog sled</em>

a = \frac{F}{m} \\\\

To increase the acceleration of the dog sled:

  • Increase the applied force on the sled.
  • Reduce the mass on the sled.

Learn more about Newton's second law here: brainly.com/question/3999427

3 0
3 years ago
Give an example of a formula of an ionic compound and explain why the formula is ionic.
olga55 [171]

Answer:

NaCl

The overall ionic formula for a compound must be electrically neutral, meaning it has no charge.

When writing the formula for the ionic compound, the cation comes first, followed by the anion, both with numeric subscripts to indicate the number of atoms of each.

ions are formed when metals are combined with nonmetals

7 0
3 years ago
1) How many grams of CO are needed to react with an excess of Fe2O3 to produce 209.7g Fe? Show your work.
klasskru [66]
1.) is157.7 g
<span>moles Fe = 209.7 g/ 55.847 g/mol=3.75 
the ratio between Fe and CO is 2 : 3 
moles CO = 3.75 x 3 /2 =5.63 
mass CO = 5.63 mol x 28.01 g/mol=157.7 g

2.) is </span><span>1.06 moles 
</span>48.7/23 = 2.12 moles sodium 
<span>2.12/2 x 24 = 25.44dm^3 hydrogen = 1.06 moles </span>
1.06 X 6.02x10^23 = 1.204x10^24 molecules of hydrogen.

3.) is 91.8 
<span>8.3 moles H2S x (2 moles H2O / 2 moles H2S) = 8.3 moles H2O = theoretical amount produced. </span><span>8.3 moles H2O x (18.0 g H2O / 1 mole H2O) = 149 g H2O produced theoretically. </span><span>% yield = (actual amount produced / theoretical amount) x 100 = (137.1 g / 149 g) x 100 = 91.8 </span>
6 0
3 years ago
Read 2 more answers
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