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3 years ago

Explain the relationships between facts and data.

Chemistry

1 answer:

crimeas [40]3 years ago

6 0

Answer:

Data is a raw and unorganized fact that required to be processed to make it meaningful. ... Generally, data comprises facts, observations, perceptions numbers, characters, symbols, images, etc. Data is always interpreted, by a human or machine, to derive meaning. So, the data is meaningless.

Explanation:

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How much heat is required to raise the temperature of

k0ka [10]

Answer:

Q = 1.68 Kcal

Explanation:

Q = mCpΔT

∴ m H2O = 12.0 g

∴ T1 = 35°C ≅ 308 K

∴ T2 = 175°C ≅ 448 K

∴ ΔT = T2 - T1 = 175 - 35 = 140 °C

∴ Cp H2O = 1 cal /g.°C

⇒ Q = (12.0 g)(1 cal/g°C)(140 °C)

⇒ Q = (1680 cal)*(Kcal/1000 cal)

⇒ Q = 1.68 Kcal

8 0

3 years ago

Select the compound that is most likely to increase the solubility of ZnSe when added to water.NaCnMgBr2NaClKClO4

vlada-n [284]

Answer:

NaCl.

Explanation:

In the solution, ZnSe ionizes to $Zn^2^+$ and $Se^2^-$ . Following reaction represents the ionization of ZnSe in solution -

$ZnSe$ ⇄ $Zn^2^+ + Se^2^-$

As we want to increase the solubility of ZnSe, we must decrease the concentration of dissociated ions so that the reaction continues to forward direction.

If we add NaCl to this solution, then we have $Na^+$ and $Cl^-$ in the solution which will be formed by the ionization of NaCl.

Now, $Zn^2^+$ in the solution will react with two $Cl^-$ ions to form $ZnCl_2$ as follows -

$Zn^2^++2Cl^-$ ⇄ $ZnCl_2$

Due to this reaction the concentration of $Zn^2^+$ will decrease in the solution and more ZnSe can be soluble in the solution.

6 0

3 years ago

I am still confused as to how you get 332 degrees.

Morgarella [4.7K]

I'm confused mind showing the problem

6 0

4 years ago

How many atoms are in 3.89 moles of Cu?

AleksandrR [38]

Answer:

2.34×10^24

Explanation:

N=n×Na

N=3.89×(6.02×10^23)

N=2.34×+0^24 atoms of Cu

3 0

4 years ago

A gas sample enclosed in a rigid metal container at room temperature (20.0∘C) has an absolute pressure p1. The container is imme

Vlad [161]

Answer : The new absolute pressure is, $1.068\times P_1$

Explanation :

Gay-Lussac's Law : It is defined as the pressure of the gas is directly proportional to the temperature of the gas at constant volume and number of moles.

$P\propto T$