Ask questions which are clear, concise and easy to understand.

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ANSWER

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Posted by Priyanshu Negi 1 day, 16 hours ago

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Posted by Akash Gorai 1 day, 23 hours ago

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Akanksha Thakur 1 day, 16 hours ago

Molar mass of C2H4 (ethene) = 2×12+4×1 = 28 g
Moles of ethene = Given mass / Molar mass
=2.8g/28g mol^-1
=0.1 mol
1 mole = 6.022 × 10^23 atoms
0.1 mole = (6.022 ×10^23 atoms/1 mole)×
0.1 mole
= 6.022 ×10^22 atoms
1 atom of C2H4 has electrons = 10
6.022×10^22 atoms of C2H4 have electrons
= 6.022 ×10^22 ×10
= 6.022 ×10^22 electrons

Posted by Rambo Equbal 2 days, 3 hours ago

- 2 answers

Shweta Dhama...👑 1 day, 15 hours ago

Limiting regent is define as the reactants which consumed first limits the amount of product formed.....

Preeti Rahi 1 day, 22 hours ago

It is the element which is present in lesser amount than required

Posted by Chirag Sangwan 2 days, 10 hours ago

- 3 answers

Posted by Muskaan Thakur 2 days, 14 hours ago

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Posted by Himanshu Kumar 2 days, 20 hours ago

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Yogita Ingle 2 days, 20 hours ago

**Quantum numbers:** Quantum numbers are numbers that designate and distinguish various atomic orbitals and electrons present in an atom.

Four quantum numbers are used to define the state of an electron completely, namely principal quantum number, azimuthal quantum number, magnetic quantum number and spin quantum number.

Posted by Pallav Kashyap 2 days, 22 hours ago

- 2 answers

Rohit Dabas 2 days, 14 hours ago

Well suppose an experiment is conducted and observations are noted down.
Now acuarry means that how correct the observation is to the true value,but precision means how close the observation is to each other.HOPE YOU LIKE THIS BASIC DIFFERENCE.

Yogita Ingle 2 days, 21 hours ago

Basis | Accuracy | Precision |

Definition | It could be defined as the level of correctness of a measurement to its true value. | It could be defined as the sharp exactness of a measurement. |

Measurement Method | Has one factor used for measuring. | Has multiple factors for measurement. |

Mutual Relationship | Accurate items have to be precise in most cases. | Precise items may or may not be accurate. |

Posted by Preeti Rahi 4 days ago

- 4 answers

Allan Krish 3 days, 11 hours ago

Quanta and photon both are same but when we talk about energy then we use photon for sun light

Nisha Solanki 3 days, 13 hours ago

Yes they are same.. Quanta term was given by Albert Einstein

Kunal Sharma 3 days, 14 hours ago

A quanta is a particle of E.M. Radiation but a photon is a special type of quanta particle which is the small pocket of energy of visible light.

Sia 🤖 3 days, 23 hours ago

One quantum of electromagnetic energy is called a photon. The plural of quantum is quanta. The concept of photons and quanta comes from quantum mechanics and quantum theory.

Posted by Siddharth Mishra 4 days, 1 hour ago

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Posted by Sanjana Rawat 4 days, 3 hours ago

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Posted by Jitender Bhati 4 days, 7 hours ago

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Preeti Rahi 1 day, 22 hours ago

2.00 is more precise as it tells mass upto 2 decimal places

Posted by Tiyasha Agrawal 5 days, 14 hours ago

- 1 answers

Sia 🤖 4 days, 20 hours ago

The Spin Quantum Number (ms) describes the angular momentum of an electron. An electron spins around an axis and has both angular momentum and orbital angular momentum. Therefore the first electron in an orbital will have a spin of +1/2. After all the orbitals are half filled, the electrons start to pair up.

Posted by Karthic Aryaas 5 days, 16 hours ago

- 1 answers

Sia 🤖 4 days, 21 hours ago

Given,5% sugar solution means, {tex}w_B{/tex} = 5g

{tex}{w_A} = 95g,\,{M_B} = 342g\,mo{l^{ - 1}}{/tex}

Similarly, for 5% glucose solution, {tex}{w_B}(glu\cos e) = 5g{/tex}

{tex}{w_A} = 95\,g\,and {M_B}(glu\cos e) = 180\,g\,mo{l^{ - 1}}{/tex}

{tex}\Delta {T_f}(cane\,sugar) = \,273.15K - 271K = 2.15K{/tex}

{tex}\Delta {T_f} = \frac{{{K_f} \times {w_B} \times 1000}}{{{M_B}{w_A}}}{/tex}

{tex}2.15 = \frac{{{K_f} \times 5 \times 1000}}{{342 \times 95}}{/tex}

{tex}{k_f} = \frac{{2.15 \times 342 \times 95}}{{5 \times 1000}} = 13.9707{/tex}

similarly, for glucose

{tex}\Delta {T_f}(glu\cos e) = \frac{{13.9707 \times 5 \times 1000}}{{180 \times 95}}{/tex}

{tex}\Delta {T_f} = 4.085K{/tex}

Freezing point of the solution

= 273.15K - 4.085K = 269.065 K

Posted by Shivani Sharma 6 days ago

- 2 answers

Yogita Ingle 5 days, 23 hours ago

The Einstein Field Equation (EFE) are also known as Einstein’s equation. There are the set of ten equations extracted from Albert Einstein’s General Theory of Relativity. The EFE describes basic interaction of gravitation. The equations were first published in 1915 by Albert Einstein as a tensor equation.

Posted by Satyam Krishna 6 days, 2 hours ago

- 2 answers

Yogita Ingle 5 days, 21 hours ago

**Metals-**

Metals are usually solid but mercury is metal which is a liquid.

According to the properties of metals, metals are hard but sodium and potassium is so soft that it can be cut with a knife.

**Nonmetals-**

Graphite is a nonmetal that can conduct electricity. (We generally know that nonmetals are insulators)

Posted by Santosh Kumar Singh 6 days, 3 hours ago

- 1 answers

Sia 🤖 3 days, 20 hours ago

This is a simple question of Limiting Reagent.

Here is the balanced Equation : 2H_{2}S +SO_{2} {tex}\rightarrow{/tex} 2H_{2}O + 3S

Thus if 2 moles of H_{2}S reacts with 1 mol of SO_{2} then 3 moles of S will be formed

But in the given condition, SO_{2} is only half mole (11.2 L of gas at STP represents half mole), thus it is limiting Reagent.

Thus if 1 mol of SO_{2} gives 3 moles of sulfur, then 0.5 Moles of it will give 1.5 moles of sulfur.

Posted by Mohit Garg 6 days, 14 hours ago

- 1 answers

Posted by Preeti Rahi 6 days, 14 hours ago

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Posted by Gajraj Singh 6 days, 18 hours ago

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Posted by Gobind Tandia 6 days, 19 hours ago

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Yash Goswami💞😎😎😎💞 6 days, 15 hours ago

When combination reaction between C and O2 takes place

Posted by Priyanshu Kumar 6 days, 20 hours ago

- 4 answers

Yash Goswami💞😎😎😎💞 6 days, 15 hours ago

Not be cleared till now by chemists but it is determined as non metal now

Posted by Rashpal Singh 1 week ago

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