What type of eclipse is pictured below?

An experiment was undertaken to determine the effect of different liquids upon the swelling of a vulcanized sample of natural ru

N76 [4]

Answer:

a. 459.86 gmol

b. 0.591

Explanation:

Please kindly check attachment for the step by step solution of the given problem.

7 0

3 years ago

What is the main gas in our atmosphere?

xxTIMURxx [149]

Answer:

Nitrogen

Explanation:

4 0

3 years ago

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Refer to the electron distribution to answer 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 5s¹. What would be the period or series number of

Salsk061 [2.6K]

Answer:

C.5

Explanation:

A number of electrons present in valence shell of penultimate Shell represents the group of elements.

For s block elements: no.of group=number of valence shell electron.

p block elements: no. of group= 2 + 10 + number of valence electrons.

d block elements: no. of group= number(n-1)d electrons + number of electrons in nth shell.

Here, the differential electron is in p orbital hence, it belongs to p block

No. of group= 2+ 10 + 3=15 i.e 15th group or VA group.

5 0

3 years ago

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Explain with equations and calculations, when necessary, whether an aqueous solution of each of these salts is acidic, basic, or

My name is Ann [436]

CaCl₂ is a basic salt.

Think about the same query for NaCl, a substance that most chemistry students are familiar with. A salt is always produced when an acid and a base combine, and this is how you make NaCl. NaOH is a basic, while HCl is an acid.

NaCl + H2O NaOH + HCl

Additionally, the salt will be neutral since the utilized bases (NaOH) and acids (HCl) are both strong acids and bases, respectively (if any or both are weak, then things change).

Ca(OH)2 can be used in place of NaOH when reacting with HCl.

Ca(OH)2 + 2HCl becomes CaCl2 + 2H2O.

CaCl2 is therefore neither an acid nor a base, by comparison thus, neutral salt alone.

<h3>What are neutral salts?</h3>

Strong acids and strong bases combine to generate neutral salts, which are so named because the color of their aqueous solutions is neutral to litmus. Examples include the neutral salts NaCl, KCl, K2S04, NaN03, KCl03, and KClO4.

To learn more about neutral salts:

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6 0

2 years ago

A gaseous air‑fuel mixture in a sealed car engine cylinder has an initial volume of 600.mL at 1.0atm. To prepare for ignition of

Ket [755]

12 atm is the new pressure of the air‑fuel mixture when A gaseous air‑fuel mixture in a sealed car engine cylinder has an initial volume of 600 ml at 1.0atm and final volume of 50 ml.

Explanation:

Data given:

The air fuel mixture is assumed to be having ideal behaviour

initial volume of gaseous air fuel mixture V1 = 600 ml

initial pressure of gaseous air fuel mixture P1= 1 atm

final volume when piston is removed, V2= 50 ml

final pressure of the gaseous air mixture, P2 = ?

Applying the Boyle's Law,

P1V1 = P2V2

rearranging the equation:

P2 = $\frac{P1V1}{V2}$

putting the value in the equation,

P2 = $\frac{600 X 1}{50}$

P2 = 12 atm

the pressure is increased to 12 atm when volume is reduced to 50 ml.

7 0

4 years ago