bindu

Bhavani das

Asked: October 30, 2020In: Class 9

Calculate the formula unit masses of ZnO, Na₂O, K₂CO₃, given atomic masses of Zn = 65 u, Na = 23 u, K = 39 u, C = 12 u, and O = 16 u.

NCERT Solutions for Class 9 Science Chapter 3 Atoms And Molecules NCERT Books for Session 2022-2023 CBSE Board and UP Board Intext Questions Page No-40 Questions No-2

Daksha Singh

Asked: October 30, 2020In: Class 9

Give the names of the elements present in the following compounds.

NCERT Solutions for Class 9 Science Chapter 3 Atoms And Molecules NCERT Books for Session 2022-2023 CBSE Board and UP Board Exercises Questions Page No-44 Questions No-5 Give the names of the elements present in the following compounds. (a) Quick lime (b) Hydrogen ...

Bhavani das

Asked: October 28, 2020In: Class 9

In a reaction, 5.3 g of sodium carbonate reacted with 6 g of ethanoic acid. The products were 2.2 g of carbon dioxide, 0.9 g water and 8.2 g of sodium ethanoate. Show that these observations are in agreement with the law of conservation of mass.

Class9, Science, NCERT, CBSE, 2022-2023, Chapter 2, Atoms And Molecules, NCERT Solutions for Class 9 Science Chapter 3 Atoms And Molecules NCERT Books for Session 2022-2023 CBSE Board and UP Board Intext Questions Page No-33 Questions No-1 sodium carbonate + ethanoic acid ...

Bhavani das

Asked: October 28, 2020In: Class 9

Hydrogen and oxygen combine in the ratio of 1:8 by mass to form water. What mass of oxygen gas would be required to react completely with 3 g of hydrogen gas?

Atoms And Molecules NCERT Books for Session 2022-2023 CBSE Board and UP Board Intext Questions Page No-33 Questions No-2

Daksha Singh

Asked: October 28, 2020In: Class 9

Write the chemical formulae of the following.

NCERT Solutions for Class 9 Science Chapter 3 Atoms And Molecules NCERT Books for Session 2022-2023 CBSE Board and UP Board Exercises Questions Page No-44 Questions No- 4 Write the chemical formulae of the following. (a) Magnesium chloride (b) Calcium oxide (c) Copper nitrate (d) ...

Daksha Singh

Asked: October 28, 2020In: Class 9

Calculate the molar mass of the following substances.

NCERT Solutions for Class 9 Science Chapter 3 Atoms And Molecules NCERT Books for Session 2022-2023 CBSE Board and UP Board Exercises Questions Page No-44 Questions No- 6 Calculate the molar mass of the following substances. (a) Ethyne, C2H2 (b) Sulphur molecule, S8 (c) ...

bindu

Calculate the formula unit masses of ZnO, Na₂O, K₂CO₃, given atomic masses of Zn = 65 u, Na = 23 u, K = 39 u, C = 12 u, and O = 16 u.

Give the names of the elements present in the following compounds.

In a reaction, 5.3 g of sodium carbonate reacted with 6 g of ethanoic acid. The products were 2.2 g of carbon dioxide, 0.9 g water and 8.2 g of sodium ethanoate. Show that these observations are in agreement with the law of conservation of mass.

Hydrogen and oxygen combine in the ratio of 1:8 by mass to form water. What mass of oxygen gas would be required to react completely with 3 g of hydrogen gas?

Write the chemical formulae of the following.

Calculate the molar mass of the following substances.

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