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3 years ago

20 POINTS!

Chemistry

1 answer:

11Alexandr11 [23.1K]3 years ago

4 0

Answer:

Explanation:

N₂O₄

Nitrogen tetroxide.

SO₃

Sulfur trioxide

Nitrogen monoxide

NO₂

nitrogen dioxide

As₂O₅

Arsenic pentoxide

PCl₃

Phosphorus trichloride

CCl₄

Carbon tetrachloride or tetrachloromethane

H₂O

Water

SeF₆

Selenium hexafluoride. Six fluorine atoms are attached with selenium atom.

N₂O₄

Dinitrogen tetroxide. It is reddish-brown liquid.

SO₃

Sulfur trioxide

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Consider the compound hydroxyapatite, Ca10(PO4)6(OH)2. Name each ion present, give the charge of each ion and show that the form

emmainna [20.7K]

Ca₁₀(PO₄)₆(OH)₂ or Ca(OH)₂·3Ca₃(PO₄)₂

PO₄³⁻   phosphate ion
OH⁻   oxyhydroxide ion
Ca²⁺   calcium ion

10*(+2) + 6*(-3) + 2*(-1) = 0
10Ca²⁺ 6PO₄³⁻ 2OH⁻

7 0

2 years ago

A bluebird lives in a maple tree. It builds a nest in the tree, where its eggs can be protected from the harsh environment. This

zysi [14]

Answer:

commensalism

(hope i spelled that right)

Explanation:

if the bird only nest in it and

the tree isn't really bothered or affected by the bird.

4 0

2 years ago

Please help thaank youu

krek1111 [17]

First, let's start off by finding the mass of this whole hydrate.
(Note: the unit of measurement for mass will be amu)

Let's find the molecular mass of each element.
$Co=58.933$
$Cl=35.45$
$H=1.008$
$O=15.999$

Now, let's find the mass of each compound.

$CoCl_2=58.933+2(35.45)=129.833$
$H_2O=2(1.008)+15.999=18.015$

We have 6 molecules of H2O, so multiply 18.015 by 6 then add that with the weight of CoCl2.

$6(18.015)=108.09$
$129.833+108.09=237.923$

Now divide 108.09 (mass of all the H2O in the hydrate) by 237.923 (total mass of hydrate).

$\dfrac{108.09}{237.923}$

$\approx0.45431$

Turn that into a percentage and you get 45.431%.
Hope this helps! :)

6 0

2 years ago

If faucet drips 5 mL of water each minute, what is the volume of water dripped at the end of five minutes?

kiruha [24]

If the faucet drops at 5 mL per minute you just have to do the following steps to find out.

5 mL for the dripping rate times 5 for the minutes.

The answer would result being 25mL

Hope this helps! Stay safe!

6 0

2 years ago

Read 2 more answers

g A spontaneous process is one in which: A. releases a large amount of heat B. may happen (is possible) C. will rapidly approach

katrin2010 [14]

Answer:

A. releases a large amount of heat

Explanation:

A reaction is said to be spontaneous if it can proceed on its own without the addition of external energy. A spontaneous reaction is not determined by the length of time, because some spontaneous reactions are completed after a long period of time. They are exothermic in nature. An example is the conversion of graphite to carbon which takes a long period of time to complete. Spontaneous reactions are known to increase entropy in a system. Entropy is the rate of disorder in a system.

In the combustion of fire, energy is released to the surroundings as there is a decrease in energy. This is an example of a spontaneous reaction because it is an exothermic reaction, which causes an increase in entropy and a decrease in energy.

7 0

3 years ago