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EastWind [94]
3 years ago
8

Need help asap will give brainly

Chemistry
2 answers:
zheka24 [161]3 years ago
7 0
I think the answers are A, C, A.
scZoUnD [109]3 years ago
5 0
The answers for those are A,C ,A
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Do all organisms have organs? Explain
Anvisha [2.4K]

Answer:

No, there are some organisms that only have one cell, although there are organ systems that are made up of many cells. Not all organisms have organ systems.

Explanation:

For example, the Trichoplax. It is an animal with no organs that is tiny and multicellular, and only feeds on microalgae. A Trichoplax are flat organisms about a millimetre in diameter with no internal structures and typically have two cellular layers. These organisms live in the oceans and seas all around the world but are not necessarily found in their natural habitat, more so in captivity such as a marine aquarium. Trichoplax are found to live in symbiosis with such things as bacteria and others in the oceans and seas.

8 0
3 years ago
Read 2 more answers
The mass of the ocean is about 1.8 1021 kg. if the ocean contains 1.076% by mass sodium ions, na+, what is the mass in kilograms
castortr0y [4]
In chemistry, if you want to express the amount of a substance out of the total amount, you express it in concentration. There are numerous units of measurement: molarity, molality, normality, mass percentages, volume percentage, or a mix of both. For this problem, the unit used for concentration is in mass percentages. The formula would be

Percentage Concentration = [(Actual Amount of Substance)/(Total amount of all substances)] * 100

Since we are given with the total mass of all the substances in the ocean and the percentage concentration, the only missing information is the actual amount of Na+ in the ocean. Substituting the values:

1.076 = (Amount of Na+ /1.8×10²¹ kg)*100
Amount of Na+ = 1.9368×10¹⁹ kg 
5 0
3 years ago
How do i know if a reaction is exo/endothermic?? help please.
goblinko [34]

Answer:

Explanation: in exothermic reaction heat is released out

In endothermic reaction heat is absorbed

3 0
3 years ago
25. How is the information in an image sent through the digital signal system?
lawyer [7]
By binary codes or a whole image depending on the description of the image.
4 0
3 years ago
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How many molecules are in 5 moles of C10H210?
Pavlova-9 [17]

Answer:

3.0 x 10²⁴molecules

Explanation:

Given parameters:

Number of moles of compound  = 5moles

Unknown:

Number of molecules  = ?

Solution:

A mole is substance that contains the Avogadro's number of particles;

   1 mole  = 6.02 x 10²³ molecules

   5 moles of the compound will give 5 x 6.02 x 10²³ molecules

                = 3.0 x 10²⁴molecules

3 0
3 years ago
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