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Jet001 [13]
3 years ago
8

A substance is either an element or a solution, compound, heterogeneous mixture, or homogenous?

Chemistry
1 answer:
Yuki888 [10]3 years ago
5 0
<span>For better understanding:
</span>
<span>Chemical element is represented by a symbol.
Solution is any homogeneous mixture.
Chemical substance is represented by a formula.
 
The substances in whose formulas only appear atoms of a chemical element are called simple substances. When there are atoms of more than one chemical element, it is a compound substance or chemical compound. Mixture is a system made up of two or more pure substances, called components.
The mixtures can be classified as homogeneous and heterogeneous. The difference between them is that the homogeneous mixture is a solution that presents a single phase while the heterogeneous can present two or more phases.</span>
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jeyben [28]

Answer:

yes its really easy but what to do in this ??

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3 years ago
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How long is a half life for carbon 14?
babunello [35]

Answer:

half-life of 5,700 ± 40 years

Explanation:

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3 years ago
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Use the pop-up menus to label the following statements as either True or False. Only the methyl ester of aspartame is sweet. Tru
pickupchik [31]

Answer:

  • Only the methyl ester of aspartame is sweet. True
  • Amide bonds can be hydrolyzed under only acidic conditions. False
  • The zwitterionic form of the amide bond is the most favored resonance form. True
  • The phosphoric acid in soda hydrolyses the aspartame ester making it sweet. False

Explanation:

  • Aspartame is obtained by combining phenylalanine and aspartic acid. Its main impurity is dicetopiperazine, which does not possess sweetening properties.
  • Amide bonds can be hydrolyzed both under basic and acidic conditions.
  • The zwitterionic form of the amide bond is the most favored resonance form. A zwitterion is an electrically neutral chemical compound, but it has formal positive and negative charges on different atoms, presenting high stability
  •  Phosphoric acid creates an acidic medium that improves the absorption of carbon dioxide, reducing the pressure generated by carbon dioxide and thus allowing bottleneck. Phosphoric acid has a bitter taste that is offset by the addition of sugar

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5 0
4 years ago
CaCO3 → CaO + CO2 Calculate the theoretical yield of Calcium Oxide if 24.8 grams of Calcium Carbonate decomposes. Calculate the
RideAnS [48]

Answer:

Theoretical yield: 13.9 g

Percent yield: 94 %

Explanation:

The reaction is:

CaCO₃ → CaO + CO₂

We see that the reaction is correctly balanced.

1 mol of calcium carbonate can decompose to 1 mol of calcium oxide and 1 mol of carbon dioxide.

We convert the mass to moles: 24.8 g . 1mol / 100.08g = 0.248 moles

As ratio is 1:1, 0.248 moles of salt can decompose to 1 mol of oxide.

We convert the moles to mass: 0.248 mol . 56.08g /1mol = 13.9 g

That's the theoretical yield.

To determine the percent yield we think:

(Determined yield / Theoretical yield) . 100 → (13.1 / 13.9) . 100 = 94 %

5 0
3 years ago
What is filtration??​
vichka [17]

Answer:

the action or process of filtering something.

Explanation:

Filtration is a physical, biological or chemical operation that separates solid matter and fluid from a mixture with a filter medium that has a complex structure through which only the fluid can pass.

4 0
3 years ago
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