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Solve the following problem: Write the following number in ordinary decimal form: 3.75 × 10−1 - Chemistry

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प्रश्न

Solve the following problem:

Write the following number in ordinary decimal form:

3.75 × 10−1

एका वाक्यात उत्तर
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उत्तर

3.75 × 10−1 = 0.375

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पाठ 2: Introduction to Analytical Chemistry - Exercises [पृष्ठ २५]

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बालभारती Chemistry [English] Standard 11 Maharashtra State Board
पाठ 2 Introduction to Analytical Chemistry
Exercises | Q 4. (O)(b) | पृष्ठ २५

संबंधित प्रश्‍न

To make a saturated solution, 36 g of sodium chloride is dissolved in 100 g of water at 293 K. Find its concentration at this temperature.


Calculate the amount of carbon dioxide that could be produced when 1 mole of carbon is burnt in air.


Calculate the amount of carbon dioxide that could be produced when 1 mole of carbon is burnt in 16 g of dioxygen.


What is the concentration of sugar (C12H22O11) in mol L–1 if its 20 g are dissolved in enough water to make a final volume up to 2 L?


Explain the term mole fraction.


Solve the following problem:

Find out the molar mass of the following compounds:

Sodium carbonate, decahydrate (Na2CO3.10H2O)

(At. mass: Cu = 63.5; S = 32; O = 16; H = 1; Na = 23; C = 12; Fe = 56; N = 14)


Solve the following problem:

Write the following number in ordinary decimal form:

3.49 × 10−11


Solve the following problem:

Write the following number in ordinary decimal form:

43.71 × 10−4


Solve the following problem:

Write the following number in ordinary decimal form:

0.011 × 10−3


Solve the following problem:

Write the following number in ordinary decimal form:

0.00477 × 105


Solve the following problem:

Perform the following calculation. Round off your answer to two digits.

`1/(3.40xx10^24)`


Solve the following problem:

Perform the following calculation. Round off your answer to two digits.

`33/(9.00xx10^-4)`


Solve the following problem:

Perform the following calculation. Round off your answer to three digits.

`(8.94xx10^6)/(4.35xx10^4)`


Solve the following problem:

Perform the following calculation. Round off your answer to three digits.

`((9.28xx10^9)(9.9xx10^-7))/((511)(2.98xx10^-6))`


Solve the following problem:

Your laboratory partner was given the task of measuring the length of a box (approx 5 in) as accurately as possible, using a metre stick graduated in milimeters. He supplied you with the following measurements:

12.65 cm, 12.6 cm, 12.65 cm, 12.655 cm, 126.55 mm, 12 cm.

Give your reason for rejecting each of the others.


Name the process associated with the following

A drop of ink placed on the surface of water contained in a glass spreads throughout the water.


Non-metals are usually poor conductors of heat and electricity. They are non-lustrous, non-sonorous, non-malleable and are coloured.

Name a lustrous non-metal.


Calculate the mass of sodium sulphate required to prepare its 20% (mass percent) solution in 100g of water?


If the concentration of glucose \[\ce{(C6H12O6)}\] in blood is 0.9 g L–1, what will be the molarity of glucose in blood?


What will be the molality of the solution containing 18.25 g of \[\ce{HCl}\] gas in 500 g of water?


Sulphuric acid reacts with sodium hydroxide as follows:

\[\ce{H2SO4 + 2NaOH -> Na2SO4 + 2H2O}\]

When 1 L of 0.1 M sulphuric acid solution is allowed to react with 1 L of 0.1 M sodium hydroxide solution, the amount of sodium sulphate formed and its molarity in the solution obtained is:

(i) 0.1 mol L–1

(ii) 7.10 g

(iii) 0.025 mol L–1

(iv) 3.55 g


What is the difference between molality and molarity?


What quantity (in mL) of a 45% acid solution of a monoprotic strong acid must be mixed with a 20% solution of the same acid to produce 800 mL of a 29.875% acid solution?


Molarity of liquid HCl will be if the density of the solution is 1.17 g/cc.


The molarity of urea (molar mass 60 g mol−1) solution by dissolving 15 g of urea in 500 cm3 of water is ______.


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