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german
4 years ago
8

How many atoms are in 0.75 grams of titanium?

Chemistry
2 answers:
Andre45 [30]4 years ago
8 0
ANSWER: 4.5x10^22
EXPLANATION: Because there are 6.022x10^23 atoms per mole; therefore, (6.022x10^23*(0.075)=4.5x10^22 atoms of titanium
krek1111 [17]4 years ago
6 0

Answer:

N(Ti)=0,0940625·10²³ atoms/mol

Explanation:

n=m/M

n(Ti)=0,75/48=0,015625

N=n·NA

N(Ti)=0,015625·6,02·10²³=0,0940625·10²³ atoms/mol

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All crystals have the same internal arrangement of atoms. <br> a. True<br> b. False
zhenek [66]
B - False. The crystals have the same internal arrangement of atoms in the same species. For example, all crystals of quartz (Onion, Amethyst, Citrine, Smoky) have the same trigonometrical arrangement.

the atoms in salt (NaCl) are arranged in a cubic way. 

 
3 0
3 years ago
The decomposition of ammonia to nitrogen and hydrogen on a tungsten filament at 800°C is independent of the concentration of amm
finlep [7]

Answer:

Order zero

Explanation:

Let's consider the decomposition of ammonia to nitrogen and hydrogen on a tungsten filament at 800°C.

2 NH₃(g) → N₂(g) + 3 H₂(g)

The generic rate law is:

rate = k × [NH₃]ⁿ

where,

rate: reaction rate

k: rate constant

n: reaction order

When n = 0, we get:

rate = k × [NH₃]⁰ = k

As we can see, when the reaction order with respect to ammonia is zero, the reaction rate is independent of the concentration of ammonia.

7 0
3 years ago
Please help me with this
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Answer:

Speed and acceleration

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4 0
3 years ago
at its discovery, benzene was recognized to be a unique unsaturated hydrocarbon. this was because it either failed to react, or
Bingel [31]

At its discovery, benzene was recognized to be a unique unsaturated hydrocarbon because it either failed to react, by substitution with common reagents or reacted by addition that led to reactions with alkenes.

<h3>What are unsaturated hydrocarbons?</h3>

Unsaturated hydrocarbons are the hydrocarbons which have at least on double or triple carbon to carbon bond in its molecules.

All other hydrocarbons are unsaturated except for the alkanes and the cyclic alkanes.

Benzene is an aromatic compound which has a special six-carbon ring with are resonance structure reflecting the presence of three carbon-carbon bonds in its molecules.

The common reactions of unsaturated hydrocarbons are substitution and addition reactions.

However, benzene on its discovery did not undergo any of these reactions.

In conclusion, benzene showed a difference when compared with the common unsaturated hydrocarbons as it did not undergo either substitution or addition reactions.

Learn more about benzene at: brainly.com/question/6028840

#SPJ1

6 0
2 years ago
Which of the following statements about 13C NMR is not true?A. In 13C proton-decoupled NMR spectra, all peaks are singlets.B. 13
adoni [48]

Answer: .B. 13C NMR spectra display peaks for only carbons that bear hydrogen atoms.

Explanation:

The statements that are true about 13C NMR are:

A. In 13C proton-decoupled NMR spectra, all peaks are singlets.

C 13C NMR chemical shifts occur over a greater range than 1H NMR chemical shifts.

D. 13C NMR easily differentiates between the different hybridized carbons (sp3, sp2, and sp hybridized carbons).organic-chemistry

Therefore, the option that isn't true is option B. "13C NMR spectra display peaks for only carbons that bear hydrogen atoms". This is false because 13C NMR will show every peak in the spectrum and it doesn't matter if it's only carbons that bear hydrogen atoms as everything will be shown.

4 0
3 years ago
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