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3 years ago

1. Circular movement around an axis

Chemistry

2 answers:

taurus [48]3 years ago

7 0

The rotation of the earth or any specific planet. Hope that helped

arlik [135]3 years ago

5 0

it is a rotation, hope that helped:)

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Which type of bond is MOST LIKELY formed in nitrous oxide?

arsen [322]

The type of bond most likely formed in nitrous oxide would be a covalent bond..

8 0

4 years ago

Read 2 more answers

Acetylene gas, C2H2, can be produced by the reaction of calcium carbide and water. CaC2(s) + 2H2O(l) --> C2H2(g) + Ca(OH)2(aq

nekit [7.7K]

Answer:

1.0 L

Explanation:

Given that:-

Mass of $CaC_2$ = $2.54\ g$

Molar mass of $CaC_2$ = 64.099 g/mol

The formula for the calculation of moles is shown below:

$moles = \frac{Mass\ taken}{Molar\ mass}$

Thus,

$Moles= \frac{2.54\ g}{64.099\ g/mol}$

$Moles_{CaC_2}= 0.0396\ mol$

According to the given reaction:-

$CaC_2_{(s)} + 2H_2O_{(l)}\rightarrow C_2H_2_{(g)} + Ca(OH)_2_{(aq)}$

1 mole of $CaC_2$ on reaction forms 1 mole of $C_2H_2$

0.0396 mole of $CaC_2$ on reaction forms 0.0396 mole of $C_2H_2$

Moles of $C_2H_2$ = 0.0396 moles

Considering ideal gas equation as:-

$PV=nRT$

where,

P = pressure of the gas = 742 mmHg

V = Volume of the gas = ?

T = Temperature of the gas = $26^oC=[26+273]K=299K$

R = Gas constant = $62.3637\text{ L.mmHg }mol^{-1}K^{-1}$

n = number of moles = 0.0396 moles

Putting values in above equation, we get:

$742mmHg\times V=0.0396 mole\times 62.3637\text{ L.mmHg }mol^{-1}K^{-1}\times 299K\\\\V=\frac{0.0396\times 62.3637\times 299}{742}\ L=1.0\ L$

<u>1.0 L of acetylene can be produced from 2.54 g $CaC_2$ .</u>

4 0

3 years ago

On the basis of the information below, the dissolution of FeF2(s) in acidic solution is A. thermodynamically favorable, because

antoniya [11.8K]

Since K3 is greater than 1, the reaction is thermodynamically favorable.

Data;

FeF2 is in an acidic solution
K2 > 1 is thermodynamically favorable
k3 > 1 is not thermodynamically favorable
K1<1 is not thermodynamically favorable

This states that the heat change in a given chemical reaction is the same irrespective of the number of process in which the reaction is effected.

Using Hess Law;

$rxn_3 = rxn_1 * 2rxn_2\\k_3 = k_1 * k_2^2\\k_3 = 2*10^-^6 * (1*10^3)^2\\k_3 = 2$

substituting this using Gibbs law,

$\delta G^0_3 = -RT\ln K_3\\\delta G^0_3 < 0$

Since K3 is greater than 1, the reaction is thermodynamically favorable.

Learn more on Hess law here;

brainly.com/question/12895682

8 0

2 years ago

When you dissolve covalent compounds in water, the molecules tend to stick together but if you dissolve ionic compounds in water

9966 [12]

A covalent bond is stronger than an ionic bond because the covalent bond doesn’t separate in water

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3 years ago

An industrial chemist studying bleaching and sterilizing prepares several hypoclorite buffers.

Vanyuwa [196]

Answer:

pH is 7.60

Explanation:

Let's think the equations:

HClO + H₂O ⇄ ClO⁻ + H₃O⁺

As every weak acid, we make an equilbrium

The salt is dissociated in solution

NaClO → Na⁺ + ClO⁻

HClO + H₂O ⇄ ClO⁻ + H₃O⁺

Initially 0.3m 0.35m

We have the moles of acid, and the moles of conjugate base.

Reacts x X X

Some amount has reacted, so I obtained (in equilibrium) the moles of base + that amount, and the same amount for H₃O⁺ (ratio is 1:1)

HClO + H₂O ⇄ ClO⁻ + H₃O⁺

0.3 - x 0.35 + x x

Let's make the expression for Ka

Ka = [ClO⁻] . [H₃O⁺] / [HClO]

(we don't add water, because it is included in Ka)

2.9x10⁻⁸ = (0.35+x).x / (0.3-x)

Ka is in order of 10⁻⁸, I can assume that 0.3-x is 0.3 and 0.35 +x =0.3

2.9x10⁻⁸ = (0.35)x / (0.3)

(2.9x10⁻⁸ . 0.3) /0.35 = x

2.48x10⁻⁸ = x

This is [H₃O⁺]

For pH = - log [H₃O⁺]

pH = 7.60

3 0

3 years ago

1. Circular movement around an axis​

1. Circular movement around an axis