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DIA [1.3K]
3 years ago
15

NEED HELP PLZ I AM CONFUSED ON WHAT TO DO!

Chemistry
2 answers:
tekilochka [14]3 years ago
7 0
1. Fact: A dead organism is still an organic being.
Evidence: Non-living things differentiate from living beings due to differences in organic and non-organic chemical compounds. On top of this, non-living things were never alive in the first place.

2. Fact: The Linnaeus system, although still recognized as the perfect class system, has changed.
Evidence: Initially, Kingdom was the highest class in the system; however, later on, scientists introduced a class above this- the Domain.

3. Fact: The tiger and goldfish are not closely related.
Evidence: Although all living things share common ancestors from billions of years ago, they branched off and continued to do so since then. The only relation these two organisms share is distant DNA patterns.

4. An organism's kingdom is no longer only based on physical appearance.
Evidence: Although before the rise of genetics and evolutionary sciences this may have been the case, it isn't anymore. We now have the ability to analyze DNA, as well as actually pick apart what makes the organism what it is.

5. Mammals are indeed in the same domain as plants. 
Evidence: All plants, fungi, protists, and animals posses eukaryotic cells; therefore placing them in the same domain.
Aloiza [94]3 years ago
6 0

Answer:

1. Myth: A dead organism is the same as a nonliving thing in science.  

o Fact: A non-living thing can be very different than a living thing.

o Evidence: Once- living things are made up different things then non-living things. While a rock is a nonliving thing, it doesn't contain the same build as living things. If we were to look at a dead once living being, we could probably conclude that it was a living thing since it contains things like cells, proteins, etc. That other thing, like dirt, wouldn't have.  

2. Myth: The Linnaeus system of classification will always stay the same.  

o Fact: The capacity of the Linnean system of classification to pass on complex connections to scientists all through the world is the reason for its wide acceptance.

o Evidence: Though many Scientist tried to attempt the classification of living organism, it was Carl Linnaeus who came up with a sequential classification of living organism under different taxons namely Kingdom, phylum, class, order, family, genus and species.

3. Myth: Tigers and goldfish are not related.  

o Fact: Tigers and goldfish are actually related.

o Evidence: They may seem different cause one is a warm-blooded animal and the goldfish a cold-blooded animal. They share the same point in the phylogenetic tree.

4. Myth: An organism's kingdom only describes physical characteristics.  

o Fact: An organism's kingdom does not only describe physical characteristics.

o Evidence: Kingdom Plantae: They obtain their food through photosynthesis Kingdom Animalia: They obtain their food through hunting or consuming        other organisms.        

5. Myth: Mammals and plants don't belong in the same domain.  

o Fact: plants and animals belong to the same domain called the Eukarya

o Evidence: the domain Eukarya is divided into four kingdoms namely; Protista, Fungi, Plantae and Animalia

Explanation: I did this

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The  hydrogen molecules combine with the oxygen molecules, 2 hydrogen molecules, and 1 oxygen molecules is the amount needed to make one water atom or molecule, whatever you want to call it.

7 0
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given the reaction 4Na(s) +O2 -> 2Na2O How many grams of Na2O can form from 3.0g of Na? use these molecular weight Na=23g/mol
kolezko [41]
No. of moles = mass / molecular weight
n = m / Mr
n = 3 g / 23 g/mol
n = 0.13 mol / 4
n = 0.0326 mol

Mr of Na2O = 23+23+16 = 62 g/mol

n = 0.0326 mol x 2 (because you have 2x Na2O) = 0.0652 mol

m = n x Mr
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Different phases of water have different densities. True or false?
Art [367]

Answer: True

Explanation:

Indeed, <em>different phases of water have diffferent densities.</em>

<em />

The different phases, solid, liquid, and gas, of water are characterized by the separation of the molecules.

The density is a measure of concentration of the mass of a substance. Mathematically, density is the ratio of the mass to the volume:

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Since, each state is characterized by certain separation of the particles, you can conclude that<em> the different phases of water have different densities</em>.

The densities of the gases are low and highly dependent on the temperature and pressure. So, the water vapor is the phase with the lowest densities.

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Which is the best description of activation energy?
Naddik [55]
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hope that helps :)

7 0
3 years ago
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