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3 years ago

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Scientists have been classifying living organisms for centuries. In the 1970s, organisms were classified in a five-kingdom

1 answer:

bekas [8.4K]3 years ago

5 0

Answer:

Classification is important because it allows scientists to identify, group, and properly name organisms via a standardized system (Linnaeus Taxonomy); based on similarities found in the organisms DNA/RNA (genetics), Adaptations (Evolution), and Embryonic development (Embryology) to other known organisms to better.

Hope I helped!!

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What is the average thermal energy of ice?

algol13

Answer:Ice doesn’t have a thermal energy.

Explanation:

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3 years ago

1. Which of these is a useful Chemical reaction?

sergeinik [125]

Answer:

1. b

2.a

Explanation:

Photosynthesis is a useful reaction because it provides plants with food.... Rusting has disadvantages

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A parachute on a racing dragster opens and changes the speed of the car from 85 m/s to 45 m/s in a period of 4.5 seconds. What i

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- 8.89 $m/s^{2}$

Explanation:

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If one atom of oxygen is neutral and another atom of oxygen is an ion do they have to differ in mass?

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4 years ago

Calculate the number of moles of sodium carbonate originally present, if 6.0 ml of 0.100 M HCl were used to titrate the mixture

valina [46]

Answer:

0.0006 mole

Explanation:

Considering:

$Molarity=\frac{Moles\ of\ solute}{Volume\ of\ the\ solution}$

Or,

$Moles =Molarity \times {Volume\ of\ the\ solution}$

Given :

For HCl :

Molarity = 0.100 M

Volume = 6.0 mL

The conversion of mL to L is shown below:

1 mL = 10⁻³ L

Thus, volume = 6.0×10⁻³ L

Thus, moles of potassium iodide :

$Moles=0.100 \times {6.0\times 10^{-3}}\ moles$

Moles of HCl = 0.0006 moles

From the reaction shown below:-

$HCl+Na_2CO_3\rightarrow NaHCO_3+NaCl$

1 mole of HCl reacts with 1 mole of sodium carbonate.

So,

0.0006 mole of HCl reacts with 0.0006 mole of sodium carbonate.

<u>Moles of sodium carbonate = 0.0006 moles</u>

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3 years ago