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4 years ago

Why are protists considered both helpful and harmful organisms?

Chemistry

2 answers:

MA_775_DIABLO [31]4 years ago

7 0

They are bacteria and the help us digest our food but they also can make us sick

aivan3 [116]4 years ago

6 0

Protists can be both beneficial and harmful.some protists such ...if some protists live inside the digestive system of animals.

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Use the investigation set up below to write a conclusion statement for what is happening to the liquid. Choose the best answer.

jeka57 [31]

D is the answer. Just look at the picture on your test ❤

8 0

4 years ago

How can an atom create charge

irga5000 [103]

Answer:

When the electrons hit the atoms in the chamber, they cause some of the electrons in the atoms to be stripped or knocked away. ... When one or more electrons is knocked off of an atom, it becomes positively charged. It is now an positive ion. A negative ion can be made by adding an electron to an atom.

if it helped then plz mark me as brainliest

4 0

3 years ago

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Consider equimolar samples of different ideal gases at the same volume and temperature. Gas A has a higher molar mass than gas B

dezoksy [38]

Answer:

I don't understand the question

Explanation:

1. c

2. c

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3 years ago

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Be sure to answer all parts. Propane (C3H8) is a minor component of natural gas and is used in domestic cooking and heating. (a)

Leokris [45]

Answer:

For a: The balanced chemical equation is given below.

For b: The mass of carbon dioxide produced will be $1.07\times 10^3g$

Explanation:

For a:

Every balanced chemical equation follows law of conservation of mass.

This law states that mass can neither be created nor can be destroyed but it can only be transformed from one form to another form.

This law also states that the total number of individual atoms on the reactant side must be equal to the total number of individual atoms on the product side.

For the given reaction, the balance chemical equation follows:

$C_3H_8(g)+5O_2(g)\rightarrow 3CO_2(g)+4H_2O(g)$

All the substances are present in gaseous state.

For b:

By Stoichiometry of the reaction:

1 mole of propane gas produces 3 moles of carbon dioxide gas.

So, 8.11 moles of propane gas will produce = $\frac{3}{1}\times 8.11=24.33mol$ of carbon dioxide gas.

Now, calculating the mass of carbon dioxide using equation:

$\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}$

Molar mass of carbon dioxide = 44 g/mol

Moles of carbon dioxide = 24.33 mol

Putting values in above equation, we get:

$24.33mol=\frac{\text{Mass of carbon dioxide}}{44g/mol}\\\\\text{Mass of carbon dioxide}=1070.52g$

Hence, the amount of $CO_2$ produced in the given reaction and expressed in scientific notation is $1.07\times 10^3g$

3 0

4 years ago

Select the correct answer. What is the number of protons in this carbon atom? A. 12 B. 6 C. 18 D. 24

andrew11 [14]

Answer:

The correct answer is

C. 6 Protons

Explanation:

Carbon is a nonmetallic element that is available in both organic and inorganic compounds.

Carbon belongs to group 14 elements in the periodic table,carbon is a chemical element with the symbol C and atomic number 6, it can form long chains with its own atoms, a feature called catenation.

Two allotropes of carbon available are diamonds and graphites, which have different crystalline structures

The physical properties of carbon vary widely with the allotropic form.

examples are.

Graphite, diamonds and coal are all nearly pure forms of carbon
Diamond is highly transparent. Graphite is opaque and black
Diamond is one of the hardest substances known to man. Graphite is soft and often used as the "lead" in lead pencils
Diamond has a very low electrical conductivity. Graphite is a very good conductor
Very brittle, and cannot be rolled into wires or pounded into sheets

8 0

3 years ago