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45051.

if 360g of urea is dissolved in 1000g of water. find the molarity of solution if density is 1.12g/mol.​

Answer»

0.5Explanation:mass of solute(urea) = 360gmass of solvent(water) = 1000G Molarity = n/V n = NUMBER of moles of solute = mass given / MOLAR mass = 360/60 = 6 density of solution is 1.12g/mol m(soln.) = m(solute) + m(solvent) density(soln.) × V(soln.) = 360 + 1000 1.12 × Vol(soln.) = 1360V(soln.) = 1360/1.12 = 1214.28 ML = 1.21 L M = n/ V = 6/ 1.21 = 0.49 ~ 0.5

45052.

What is the volume of so3 liberated from 3 moles of so2 burns with o2

Answer»

The balanced CHEMICAL EQUATION can be written as: 2SO2​+O2​→2SO3​ Thus, the volume ratio is 2:1:2Kindly mark me as brainliest..plzzhope U like my ANSWER..

45053.

4g of NaOH is dissolved in 36 g of water. Calculate the mass percentage of NaOH in the solution b) 10%c) 5%(d) 15% a) 20%​

Answer» TION:MARK it as the brainliest✌️
45054.

If one of the metals in an alloy is mercury , it is called ________..... please answer fast...... don't spam.....will mark as brainliest ​

Answer»

AMALGAMExplanation:An ALLOY of any metal with mercury is called AMALGAM and the electrical CONDUCTIVITY of an alloy is more than that of pure metals.Hope it HELPS you buddy❣❣

45055.

Mass psWhat volume of 75.) H₂ so byreq. to prepare 15 lit of 0.2m Here(Density sample is 1.8)​

Answer»

don't KNOW SEARCH on GOOGLE

45056.

Short questions answer of the chapter matter in our surrounding for class 9 ​

Answer» TION:what what is your QUESTION
45057.

7. (c) nitrogen gaswater4g of NaOH is dissolved in 36 g of water. Calculate the mass percentage of NaOH in the solution2046(b) 10%a) 20 %(d) 15%c) 5%​

Answer»

....... । ।।।।।।

45058.

17. State the condition under which the following metals react with water. Write equation for each reaction. a. Na b. Mg c. Fe

Answer»

a. NA REACTS with cold water                2Na + 2H2O  → 2NaOH  + H2  B. Mg reacts with HOT water Mg  + 2H2O  → Mg(OH)2  + H2 c. Fe reacts with steam 3Fe(s) + 4H2O(g) → Fe3O4(s) + 4H2(g)

45059.

Why are atoms considered to be Neutral​

Answer»

The number of PROTONS and ELECTRONS in an ATOM is EQUAL. That is why, an atom is considered to be neutral.hope it HELPS buddy

45060.

Give the dimensions of a simple cubic lattice​

Answer»

Simple or primitive cubic lattice (sc or cubic-P) has one lattice point at the each corner of the unit CELL. ... The simplest crystal structures are those in which there is only a single atom at each lattice point. In the sc structures the spheres fill 52 % of the volume.Explanation:Agr aap MERE answer ko brainliest mark krte h to mai aapko follow jarur KRUNGI I promise. Aap ko bas ek toch krna h isko krne me aapka KCH nhi jaayega.

45061.

Define law of active (or) mass action

Answer» LAW of mass action, law STATING that the rate of any chemical reaction is proportional to the product of the MASSES of the reacting substances, with each mass RAISED to a power equal to the COEFFICIENT that occurs in the chemical equation.Explanation:
45062.

Hi, am Maddie...Why do fireflies glow?

Answer»

hi MARINE why are you FIREFLIES go PLEASE do not ASK this questions on brainly

45063.

Partikel dalam cairan dan gas menunjukkan gerakan acak. Apa artinya itu, dan mengapa itu terjadi?

Answer» HIIIIIIII FOLLOW me.........
45064.

SI unit of EMF is 11th class

Answer»

The SI unit of electromotive forceWhat is the unit of EMF? The unit for electromotive force is Volt. EMF is numerically expressed as the NUMBER of JOULES of energy given by the SOURCE divided by each Coulomb to enable a unit electric CHARGE to move across the circuit.

45065.

Hola Amigos ✌️...What are different phases of colloids?​

Answer»

ferent phases of COLLOIDS are 1. dispersed PHASE (internal phase) 2. continuous phase (disperision MEDIUM) If you are statisfied with my answer please follow me or LIKE the answer

45066.

How many atoms of H and S are present in 0.8 mole of H2S ?​

Answer»

There is 1 atom of SULFUR per molecule, and 2 atoms of hydrogen per molecule. Explanation: If you want to find out how many there are, know that the number of things in one mole of those things equals the AVOGADRO CONSTANT. Work out how many molecules there would THEREFORE be in 0.8mol.please mark me as brainliest

45067.

the percentage of carbon, hydrogen and oxygen in an organic substance are 54.55, 9.06 and 36.39 respectively, find the empirical formula and molecular formula. (molecular mass of organic substance =88 gram per mole)​

Answer»

Let amount of organic = 100 gmamount of carbon = 54.55 gamount of hydrogen = 9.09 gAmount of OXYGEN = 36.26 gnumber of MOLE of carbon = 1234.55                                            =4.54583number of mole of hydrogen = 1.0189.09                                                    =9number of mole of oxygen = 1636.26                                                =2.264.54833:9:2.262:4:1organic COMPOUNDS Empirical formula  =C2H4OMolecular WEIGHT = 24+4+16=44 (for empirical)Molecular weight = 2× vapour density                             =2×44=88 GTO molecular formula be = C4H8O2

45068.

A) 18 g of glucose, C6H12O6 (Molar mass – 180 g mol-1 ) is dissolved in 1 kg of water in a sauce pan. At what temperature will this solution boil? (Kb for water = 0.52 K kg mol-1, boiling point of pure water = 373.15 K) b) An aqueous solution of sodium chloride freezes below 273 K. Explain the lowering in freezing points of water with the help of a suitable diagram.​

Answer» FREEZING point of WATER help of a suitable DIAGRAM
45069.

Give balanced equations for the following conversions. (a) An alkene to an alkane.(b) An alkene to an alcohol.(c) An alkyne to an alkene.​

Answer» TION:C An ALKYNE to an ALKENE
45070.

1. A solution of CuSO4 was kept in an iron pot. After a few days , the iron pot was found to have a number of holes in it. Write the equation of the reaction that took place. Explain this reaction in terms of reactivity.

Answer»

After a few days, the iron pot. Hence, holes will APPEAR on pot, because there is DISPLACEMENT REACTION taking place between Iron metal and CUSO4 SOLUTION.

45071.

How many orbital are possible for n=2​

Answer» FOUR orbitalsThere are four orbitals in the n = 2 shell. There is only ONE ORBITAL in the 2s subshell.Explanation:PLEASE mark as brainlist and thanks
45072.

Mention fwo differences wach between colodial, suspension and solution​

Answer»

Colloidal SOLUTIONS are the type of mixture, where the solute (tiny particles or colloids) is uniformly distributed in the solvent (LIQUID phase). The suspension is the mixture, where the solute does not get dissolved, RATHER get suspended in the liquid and float freely in the medium.Explanation:I hope it is helpful PLZ marks me as brainlieast and give me thanks at all my ANSWERS and follow me

45073.

5.REY20.100 M HCOOH HCOO] Etri (K = 1.7 x104.(2) 3.1 x103M(3) 2.1 x10 M1 x 10 M​

Answer»

tion:construct construct a quadrilateral ABCD in which a b is equal to 4 centimeter DC's equals to 3 centimeter CD is equals to 4 centimeter ad is equals to 3 centimeter and DIAGONALLY aC is equal to 5 centimeter major diagnose ADD is it equal to AC major ANGLE a

45074.

Explain types of matter(on the basis of chemical composition)​

Answer»

Matter can be CLASSIFIED into two on the basis of it's chemical composition : Pure SUBSTANCE : Whose matter particles are constant and are made up of one TYPE of atom/molecule. Mixtures : Whose particles are not of a single type and may be a group of two or more elements.Explanation:I hope it is helpful PLZ MARKS me as brainlieast and give me thanks at all my answers and follow me

45075.

Chemical formula of:magnesium ammonium​

Answer» TION:NH4MgPO4hope it will HELP U ✌️
45076.

What is name India prime minister of india​

Answer»

Narendra MODI is PRIME minister of India....I HOPE this helps you....Mark my ANSWER BRAINLIEST....Thank you.....

45077.

Define work of Expansion​

Answer» CALCULATING the Amount of Expansion Work at Constant PRESSURE ASSOCIATED With a VOLUME Change.
45078.

How can you convert a concentrated solution to a dilute solution and vice versa​

Answer» CHECK below the attachmentExplanation:
45079.

How calculate the molecular mass of CaSO4​

Answer»

136.14 g/molThe molar MASS of CaSO4 is 136.14 g/mol. To determine the molar mass, add the ATOMIC MASSES of all the ATOMS in a compound.

45080.

Explain molar volume of a gas​

Answer» TION:The molar volume is the volume occupied by one mole of any gas, at room temperature and pressure. The molar volume is EQUAL to 24 dm 3 (24,000 cm 3). This volume is given in questions that NEED it. A cube with 29 cm sides has a volume of just over 24 CUBIC decimetres.
45081.

In aqueous solution of Al2(SO2)3 concentration of Al+3 is 1.8 M then what is the concentration of (so^-2)4​

Answer»

every molecule of ALUMINUM SULFATE that DISSOCIATES 2 ions of aluminum and 3 ions of sulfate are produced. If the concentration of aluminum ion concentration is 0.28M then the aluminum sulfate concentration MUST be 0.14M and the sulfate ion concentration must

45082.

Name two elements which react with sulphuric acid to form hydrogen. please give the answer as soon as possible​

Answer» TION:Calcium, STRONTIUM and bariumCalcium, strontium and bariumWhen exposed to sulfuric acid, a layer of insoluble SULFATE is formed on each of these metals, slowing or STOPPING the reaction entirely. In the calcium case, some HYDROGEN is produced, along with a white precipitate of calcium sulfate
45083.

When do you use ide and ite in compounds?​

Answer»

The -ide ending is added to the NAME of a monoatomic ANION of an element. Some polyatomic anions contain oxygen. These anions are called OXYANIONS. When an element forms two oxyanions, the one with LESS oxygen is given a name ending in -ite and the one with more oxygen is given a name that ends in -ate.Explanation:I hope it is helpful plz marks me as brainlieast and give me thanks at all my answers and follow me

45084.

If we are starting from ethylene molecule, how many different molecules with different functionalities can we obtain? Write ten different types of reactions or add few more steps, just changing the reactants only is not acceptable​

Answer»

ghejebcrlsoso FVSB auje K then SND BF DU

45085.

Properties glass and plastic always share.

Answer»

When heated like in Glass blowing/Glass can be stretched and formed-like plastic can be stretched and formed/molded around objects. They become DIFFERENT when the heated glass cools down and the glass BECOMES hard whereas plastic continues to be able to stretch.Explanation:I HOPE it is HELPFUL PLZ marks me as brainlieast and give me thanks at all my answers and follow me

45086.

Non metal usually form covalent bond​

Answer»

tion:Nonmetals can FORM different types of bonds depending on their partner ATOMS. Ionic bonds form when a nonmetal and a METAL exchange electrons, while covalent bonds form when electrons are shared between TWO nonmetals. ... A covalent bond involves a pair of electrons being shared between atoms.thank my answer mark as BRAINLIEST

45087.

Write answer smartly​

Answer» QUESTION 1A.joule secondB.Building-up PRINCIPAL
45088.

The mass % of nitrogen in one of its oxides is 46.67, determine the empirical formula of the compound. ​

Answer»

tion:Let US assume the weight of the compound =100 gm.Weight of nitrogen =36.8 gmMoles of nitrogen =1436.8∴ Weight of oxygen =100−36.8=63.2 gmMoles of oxygen =1663.2The RATIO of number of moles of N and O is,N:O=1436.8 : 1663.2            =2.628:3.95            =1:1.5             =2:3So, formula is N2O3.

45089.

Find mass of 3 moles of N?answer fast​

Answer» 3 MOLES of N2 WEIGHS =3×28g=84g.
45090.

So2+H2s=2S+h2o balance this equation please tell me

Answer»

I'm not CLEAR with your QUESTION..WRITE it clearly..Then I WLL try to answer..

45091.

Calculate the number of moles present in 18.066 x 1024 molecules of calcium carbonate.​

Answer»

24.5 is the CORRECT ANSWER OK

45092.

Calculate the number of atoms in 80u of Neon.  ​

Answer» TION:So, the NUMBER of atoms in 60 G of NEON =3×6.
45093.

What is pseudomolecular reaction with example

Answer»

In a chemical reaction if two or more reactants are involved but the rate of reaction DEPENDS only upon the CONCENTRATION of any one of the REACTANT and independent of other reactants then it is SAID to be pseudo molecular reaction. eg=====> Acid Catalyzed Hydrolysis of ester.PLZ MARK ME AS BRAINLIEST!!!!!!!!!

45094.

When an ant bites we apply calamine lotion to it give region

Answer»

Apply CALAMINE lotion or hydrocortisone CREAM, or take antihistamines by mouth to ease symptoms. Take over-the-counter pain relievers, if needed.Kindly mark me as BRAINLIEST..

45095.

What type of reaction is formation of HCl from hydrogen and chlorine

Answer»

Combination reactionExplanation:A combination reaction is a reaction where two or more elements or compounds combine to form a single compound. Such REACTIONS are represented by equations of the following form: X + Y → XY. The combination of two or more elements to form ONE compound is called combination reaction.Hope it HELPS U!

45096.

15. Among the elements B, Al, C and Si, (i) which element has the highest first ionization enthalp?(ii) which element has the most metallic character?Justify your answer in each case​

Answer»

tion:(i) C has more ionization enthalpy because it's size COMPARATIVE to other is smallest. And thus nuclear attraction is more strong(II) Al has most metallic character because it's size is greater than others thus it can loose electrons rasul than othersHOPE THIS WILL HELP YOUMARK IT AS BRAINLIST

45097.

How many atoms are there in exactly 12 g of carbon ?

Answer»

The value of the MOLE is equal to the number of atoms in exactly 12 grams of PURE carbon-12. 12.00 g C-12 = 1 mol C-12 atoms = 6.022 × 1023 atoms • The number of particles in 1 mole is called Avogadro's Number (6.0221421 x 1023).EXPLANATION:I hope it is helpful plz MARKS me as brainlieast and GIVE me thanks at all my answers and follow me

45098.

Give Latin names for sodium & mercury.

Answer»

Sodium & Mercurij = This means Sodium and Mercury in Latin...Explanation:I Hope U R Crystal Clear With UR Question... So, Kindly Mark Me As BRAINLIEST If U Like To And Do RATE Me If U Like To... THANK YOU!!!!!!

45099.

Write two elements which can dissolve in cold water.​

Answer» SODIUM and POTASSIUM...or CALCIUM
45100.

नंबर ऑफ एटम्स प्रेजेंट इन 52 ग्राम ऑफ हीलियम इज​

Answer»

13×6.022×10^23 atoms it is ASKED that we NEED to find 52 G HELIUM have how many atom and 4g gram mass of helium will have NA atomsso 52/4 =13 times13× Na atoms