Neutral charge mass of 1 amu. Negative charge 0 amu. The number of protons is equal to. Most mass in an atom is in the. The sum of protons and neutrons for an individual atom. Are atoms of the same element identical.
A100 J
B931.1 kcal
CHow many dalton in 1 amu? The answer is 0.7577. We assume you are converting between dalton and atomic mass unit 1960. You can view more details on each measurement unit: dalton or amu The SI base unit for mass is the kilogram. 1 kilogram is equal to 6.752E+26 dalton, or 6.949E+26 amu. Believe it or not, mathematically, moles and Avogadro's constant bring us back to atomic mass units. Dividing both sides by Avogadro's constant, we find that 1 amu is equal to 1.66. 10^-27 kg. This means that atomic mass units can be easily converted to kilograms or grams. For example, carbon-12 has a mass of 12 amu.
931.1 MeV
D$ {{10}^{7}}erg $
Crack abbyy finereader for mac. Install ssh server mac. Solution:
1amu $ =1.67times {{10}^{-24}}g $
Energy equivalent to this mass can be calculated by using the relation;
$ E=m{{c}^{2}} $
Here $ m=1.67times {{10}^{-24}}g $
$ c=3times {{10}^{10}}cm,{{sec }^{-1}} $
$ therefore $ $ E=1.67times {{10}^{-24}}times {{(3times {{10}^{10}})}^{2}}ergs $
$ =frac{1.503times {{10}^{-3}}}{{{10}^{7}}}J $
$ =1.503times {{10}^{-10}}J $
Now, $ 1.6times {{10}^{-19}}J=1text{ }eV $
$ 1J=frac{1}{1.6times {{10}^{-19}}}eV $
$ =6.25times {{10}^{18}}eV $
$ therefore $ $ 1.503times {{10}^{-10}}J $
$ =6.25times {{10}^{18}}times 1.503times {{10}^{-10}}eV $
$ =9.393times {{10}^{8}}eV $
$ therefore $ 1 amu $ =939.3MeV. $
1. The wrong llJPAC name of the compound $ce{CH_3CHOH· CH_2CH_3}$ is :
2. $Ca^{2+}$ is isoelectronic with:
3. How many isomers are possible for the alkane $ {{C}_{4}}{{H}_{10}} $ ?
4. Geometrical isomerism is possible in case of:
5. The number of isomers of the compound with molecular formula $ {{C}_{2}}{{H}_{2}}B{{r}_{2}} $ is:
6. The number of ether isomers possible for $ {{C}_{4}}{{H}_{10}}O $ are:
7. Correct gas equation is:
8. Which combinations of quantum numbers $ n,l, $ $ m $ and s for the electron in an atom does not provide a permissible solution of the wave equation?
9. Which element is used for making a transistor?
10. The rate constant for a first order reaction whose half-life, is 480 s is:
1. In Wolff‐Kishner reduction, the carbonyl group of aldehydes and ketones is converted into
2. Identify compound X in the following sequence of reactions:
3. Identify a molecule which does not exist.
4. Identify the incorrect match.
Name IUPAC Official Name A Unnilunium i Mendelevium B Unniltrium ii Lawrencium C Unnilhexium iii Seaborgium D Unununnium iv Darmstadtium
| Name | IUPAC Official Name | ||
|---|---|---|---|
| A | Unnilunium | i | Mendelevium |
| B | Unniltrium | ii | Lawrencium |
| C | Unnilhexium | iii | Seaborgium |
| D | Unununnium | iv | Darmstadtium |
NEET 2020Classification of Elements and Periodicity in Properties
5. Reaction between acetone and methyl magnesium chloride followed by hydrolysis will give :
6. Identify the correct statements from the following:
(a) $CO_2(g)$ is used as refrigerant for ice-cream and frozen food.
(b) The structure of $C_{60}$ contains twelve six carbon rings and twenty five carbon rings.
(c) $ZSM-5$, a type of zeolite, is used to convert alcohols into gasoline.
(d) $CO$ is colorless and odourless gas.
7. Which of the following set of molecules will have zero dipole moment ?
8. On electrolysis of dil.sulphuric acid using Platinum (Pt) electrode, the product obtained at anode will be:
9. An element has a body centered cubic (bcc) structure with a cell edge of 288 pm. The atomic radiusis:
10. Find out the solubility of $Ni(OH)_2$ in 0.1 M NaOH. Given that the ionic product of $Ni(OH)_2$ is $2 times 10^{-15}$
MHT CETMHT CET 2010Some Basic Concepts of Chemistry Report Error
B$ 1.492 times 10^{-7}, J $
C$ 1.492 times 10^{-13}, J $
What Is An Amu
D$ 6.023 times 10^{23}, J $
Solution:
$ 1 , u = 1.66 times 10^{-24} , g $
= $ 1.66 times 10^{-27} , kg $
= $ 1.66 times 10^{-27} times ( 3 times 10^8)^2 , kg , m^2 s^{-2} $
( $ because , E = mc^2 $ )
= 1.494 $ times 10^{-10} , J $
1. Ammonium acetate which is $ 0.01 ,M $ , is hydrolysed to $ 0.001, M $ concentration. Calculate the change in $ pH $ in $ 0.001, M $ solution, if initially $ pH = pK_a $
2. Among the following, the formula of saturated fatty acid is
3. $ 1 ,mol $ alcohol reacts with $ Na $ to give what weight of hydrogen ?
4. The units of rate constant for first order reaction are
5. $ 1 ,u $ (amu) is equal to
6. Ethyl methyl ketone is obtained by heating calcium salts of
7. $ CH_3COOH $ when reacts with $ C_2H_5OH $ gives a product. The same product is obtained by which reaction ?
8. Which of the following is a trisaccharide ?
9. Glucose on reaction with Fehling solution gives
10. The common names of the lower fatty acids are obtained from
1. A metal M (specific heat 0.16) forms a metal chloride with = 65% chlorine present in it. The formula of the metal chloride will be
2. Mass % of carbon in ethanol is
3. Which element has the highest first ionization potential?
4. Which statement(s) is (are) false for the periodic classification of elements?
5. The electronegativities of N, C, Si and P are in the order
6. The effective nuclear charge of an element with three valence electrons is 2.60. What is the atomic number of the element?
7. Identify the element that forms amphoteric oxide.
8. Which of the set of oxides are arranged in the proper order of basic, amphoteric, acidic ?
9. 5 moles of $AB^2$ weigh $125 times 10^{-3}; kg$ and 10 moles of $A_2B_2$ weigh $300 times 10^{-3} ; kg$. The molar mass of $A(M_A)$ and molar mass of $B(M_B) $ in kg mol$^{-1}$ are :
10. Which of the following is an example of Law of multiple proportion?
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1. In Wolff‐Kishner reduction, the carbonyl group of aldehydes and ketones is converted into
2. Identify compound X in the following sequence of reactions:
3. Identify a molecule which does not exist.
4. Identify the incorrect match.
Name IUPAC Official Name A Unnilunium i Mendelevium B Unniltrium ii Lawrencium C Unnilhexium iii Seaborgium D Unununnium iv Darmstadtium
| Name | IUPAC Official Name | ||
|---|---|---|---|
| A | Unnilunium | i | Mendelevium |
| B | Unniltrium | ii | Lawrencium |
| C | Unnilhexium | iii | Seaborgium |
| D | Unununnium | iv | Darmstadtium |
NEET 2020Classification of Elements and Periodicity in Properties
5. Reaction between acetone and methyl magnesium chloride followed by hydrolysis will give :
How To Find Amu Chemistry
6. Identify the correct statements from the following:
(a) $CO_2(g)$ is used as refrigerant for ice-cream and frozen food.
(b) The structure of $C_{60}$ contains twelve six carbon rings and twenty five carbon rings.
(c) $ZSM-5$, a type of zeolite, is used to convert alcohols into gasoline.
(d) $CO$ is colorless and odourless gas.
7. Which of the following set of molecules will have zero dipole moment ?
8. On electrolysis of dil.sulphuric acid using Platinum (Pt) electrode, the product obtained at anode will be:
1 Amu Is Equal To Mev
9. An element has a body centered cubic (bcc) structure with a cell edge of 288 pm. The atomic radiusis:
10. Find out the solubility of $Ni(OH)_2$ in 0.1 M NaOH. Given that the ionic product of $Ni(OH)_2$ is $2 times 10^{-15}$