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2 years ago

In which 1.0 gram sample are particles arranged in a rystal structure?

Chemistry

1 answer:

lilavasa [31]2 years ago

5 0

The Options are as follow,

(1) CaCl₂ (s) (3) CH₃OH (l)

(2) C₂H₆ (g) (4) Cal₂ (aq)

Answer:

Option-1 is the correct answer.

Explanation:

As we know crystal formation is the property of solids. Therefore, in given options we are given with four different states of matter.

Option A, CaCl₂ is in a solid state , so it can exist in crystal form.

Option 2, C₂H₆ (Ethane) is in gas form, so it cannot form crystals.

Option 3, CH₃OH (Methanol) is present in liquid form, so it fails to form crystals.

Option 4, CaI₂, it is dissolved in water, Hence, it is in aqueous state, Therefore it also lacks crystal structure.

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After researching the possible effects of music, Elaina proposes that if people listen to faster-paced music, their pulse rates

SCORPION-xisa [38]

Answer:

Elaina's scientific investigation is missing controlled variables.

Explanation:

A good scientific investigation should vary only the factor that is studied (the speed of the music. All other factors should be kept constant.

She hasn’t controlled for volume. The volume of the music may affect the rate at which the listener’s heart rate will increase. She should have measured each person’s pulse after the same period of listening.

She hasn’t controlled for age. A grandmother may respond to loud music differently from a teenager. All her subjects should be about the same age.

She hasn’t controlled for wakefulness. A person may respond to music differently when awake than when asleep.

7 0

2 years ago

At 700 K, Kp for the following equilibrium is (5.6 x 10-3) 2HgO(s)--> 2Hg(l) + O2(g) Suppose 51.2 g of mercury(II) oxide is p

Vesnalui [34]

Answer: Option (B) is the correct answer.

Explanation:

According to the given reaction equation, formula to calculate $\Delta n$ is as follows.

$\Delta n$ = coefficients of gaseous products - gaseous reactants

= 1 - 0

= 1

Also we know that,

$K_{p} = K_{c} \times (RT)^{\Delta n}$

$5.6 \times 10^{-3} = K_{c} \times (0.0821 \times 700)^{1}$

$K_{c} = 0.097 \times 10^{-3}$

For the equation, $2HgO(s) \rightarrow 2Hg(l) + O_{2}(g)$

Activity of solid and liquid = 1

As, $K_{p} = \frac{P^{2}_{Hg} \times P_{O_{2}}}{P^{2}_{HgO}}$

$5.6 \times 10^{-3} = P_{O_{2}}$

Hence, $P_{O_{2}}$ = 0.0056 atm

Thus, we can conclude that partial pressure of oxygen gas at equilibrium is 0.0056 atm.

5 0

2 years ago

if 203 mL of water is added to 5.00 mL of 4.16 M KCl solution, what is the concentration of the dilute solution

Sever21 [200]

Answer:0.100

Explanation:

5 0

2 years ago

While hiking in the woods, you see a brown, rotting apple lying on the ground. What changes is the physical properties of the ap

mojhsa [17]

Answer:

The change in color.

Explanation:

The apple turn brown in color because of the oxidation process. When the oxygen and water molecules in air react with it, oxidation take place. The oxidation process is very efficient in ambient temperature.

For example, if the peal off apple is placed into the refrigerator it take a time to got oxidize and turn brown, but if it is placed in room temperature it quickly turn brown.

when oxygen is react with peel off apple , it trigger the polyphenol oxidase enzyme to oxidize the phenolic compound and quinones are formed which then react with amino acids and produced brown color.

3 0

1 year ago

Rutherford, geiger, and marsden’s experiment demonstrated that the volume of the nucleus is roughly what fraction of the volume

trasher [3.6K]

Rutherford, Geiger and Marsden's experiment proved that every atom has a nucleus and that this nucleus is of positive charge and contains the most of the mass of the atom. 0.005% of the volume occupied by the electrons is the volume of the nucleus.

4 0

1 year ago