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3 years ago

:PPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP

Chemistry

2 answers:

siniylev [52]3 years ago

5 0

Answer: :))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))

Explanation:

tatuchka [14]3 years ago

4 0

:))))))))))) uwu uwu uwu

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2. Write the formula or name for the following

Tems11 [23]

Answer:

Diphosphorus pentoxide

Carbon dichloride

BCl3

N2H4

Explanation:

These are all covalent compounds. To name covalent compounds, you add prefixes to the beginning of their names depending on what the subscript is of each element. The prefixes are:

1: Mono

2: Di

3: Tri

4: Tetra

5: Penta

6: Hexa

7: Hepta

8: Octa

9: Nona

10: Deca

For example, since the first one is Phopsphorus with a 2 next to it, you add the prefix Di to it.

If the first element in the compound only has one, meaning no number next to it, you do not say mono. This is why we just say "Carbon" for the second one instead of "Monocarbon."

Finally, you always have to end the second element in the compound with "ide." So, "chlorine" becomes "chloride," "oxygen" becomes "oxide," and so on.

7 0

4 years ago

PLEASE HELP!!!!

LenKa [72]

Answer:

A fundamental task of protein is to act as enzymes-catalysts that increase the rate of virtually all the chemical reactions within cells. Although rnas are capable of catalyzing some reactions, most biological reactions are catalyzed by proteins

6 0

3 years ago

Which set of chemical name and chemical formula for the same compound is correct?A. Ammonium sulfite, (NH4)2SB. Iron(III) Phosph

gregori [183]

Answer : The correct option is, Iron(III) phosphate, $FePO_4$ .

Explanation :

Ionic compound : It is defined as the compound which is formed when electron gets transferred from one atom to another atom.

All the polyatomic ions always form an ionic compound.

Polyatomic ions : It is a charged species that composed of two or more atoms and these charged species are bonded by the covalent bond.

(1) The chemical formula for Ammonium sulfite.

The given compound ammonium sulfate is an ionic compound. It is made up of two different ions which are ammonium ion $(NH_4^+)$ and sulfite ion $(SO_3^{2-})$ by the criss-cross method. Thus, the correct chemical formula for ammonium sulfite is $(NH_4)_2SO_3$ .

(2) The chemical formula for Iron(III) phosphate.

The given compound iron(III) phosphate is an ionic compound. It is made up of two different ions which are iron ion $(Fe^{3+})$ and phosphate ion $(PO_4^{3-})$ by the criss-cross method. Thus, the correct chemical formula for iron(III) phosphate is $FePO_4$ .

(3) The chemical formula for Lithium carbonate.

The given compound lithium carbonate is an ionic compound. It is made up of two different ions which are lithium ion $(Li^+)$ and carbonate ion $(CO_3^{2-})$ by the criss-cross method. Thus, the correct chemical formula for lithium carbonate is $Li_2CO_3$ .

(4) The chemical formula for Magnesium dichromate.

The given compound magnesium dichromate is an ionic compound. It is made up of two different ions which are magnesium ion $(Mg^{2+})$ and dichromate ion $(Cr_2O_7^{2-})$ by the criss-cross method. Thus, the correct chemical formula for magnesium dichromate is $MgCr_2O_7$ .

From this we conclude that, the correct set of chemical name and chemical formula for the same compound is Iron(III) phosphate.

Hence, the correct option is, Iron(III) phosphate, $FePO_4$ .

6 0

3 years ago

I WILL GIVE BRAINLIEST PLS HELP A musician hits a drum with a drumstick. In three to four sentences, explain the collision force

lora16 [44]

Answer:

When the drumstick hits the drum, it exerts a force on the drum. Newton’s third law states that if a force from object A is exerted onto object B, then an equal and opposite force from object B is exerted onto object A. By Newton‘s third law, the drum also exerts a force on the drumstick.

I hope this helps! :)

5 0

3 years ago

B) Explain if the fossil evidence supports the idea that each cycle takes a long period of time.

fiasKO [112]

Fossils are great for providing evidence for an evolutionary change! Scientists can see how long life has existed on Earth by studying fossil records. Any living organism that is preserved, is considered a fossil, including plants! Fossils take 10,000 years to be formed, showing that, yes, fossil evidence supports that these cycles of evolution take quite a long time.

Hope this helps!

-Moiselle

3 0

2 years ago