Questions by anony mous

0 votes

1 answer

Using dots (•) and crosses (x) show bonding in; (C = 2, 0 = 16, H = 1)

asked Jul 7, 2021 in Chemistry Form 2

0 votes

1 answer

The table below shows the pH values of solution J to N

asked Jul 7, 2021 in Chemistry Form 4

0 votes

1 answer

Study the experimental set up of apparatus shown below.

asked Jul 7, 2021 in Chemistry Form 2

0 votes

1 answer

A white solid L changes to yellow solid R when strongly heated but on cooling becomes white again. When L is reacted with dilute nitric(v) acid effervescence occurs.

asked Jul 7, 2021 in Chemistry Form 4

0 votes

1 answer

The standard reduction potentials of two half cells are

asked Jul 7, 2021 in Chemistry Form 4

0 votes

1 answer

Nitrogen reacts with oxygen according to the equation.

asked Jul 7, 2021 in Chemistry Form 3

0 votes

1 answer

An aqueous solution of hydrogen chloride can be prepared as shown in the diagram below.

asked Jul 7, 2021 in Chemistry Form 3

0 votes

1 answer

The following elements belong to the same group of periodic table.

asked Jul 7, 2021 in Chemistry Form 2

0 votes

1 answer

Describe how you would prepare dry sample of lead (II) chloride starting with lead (II) carbonate.

asked Jul 7, 2021 in Chemistry Form 4

0 votes

1 answer

The table below gives some experimental results on four samples of water. Use the information to answer the questions that follow.

asked Jul 7, 2021 in Chemistry Form 4

0 votes

1 answer

The lattice energy of sodium bromide and hydration energies of sodium and bromide ions are 733,406 and 335kj/mol respectively.

asked Jul 7, 2021 in Chemistry Form 4

0 votes

2 answers

Define molar heat solution.

asked Jul 7, 2021 in Chemistry Form 4

0 votes

1 answer

70g of salt W were added to 80cm3 of water at 25°C. After stirring 10g of crystals of salt were filtered out. Determine the solubility of salt W at 25°C.

asked Jul 7, 2021 in Chemistry Form 2

0 votes

1 answer

An element has isotopic species A and B each with a mass number 39 and 40 respectively. The percentage of A is 60% and B is 40% for an isotopic element X. Calculate the relative atomics mass of X.

asked Jul 7, 2021 in Chemistry Form 2

0 votes

1 answer

The atomic number of element A is 11 and that of B is 8

asked Jul 7, 2021 in Chemistry Form 2

0 votes

1 answer

State the process that takes place when;

asked Jul 7, 2021 in Chemistry Form 4

0 votes

1 answer

Zitaje changamoto zozote tano za miviga katika jamii yoyote ile.

asked Jul 6, 2021 in Fasihi

0 votes

1 answer

Ni mambo gani ambayo huchangia kubadilika kwa kazi za fasihi simulizi?

asked Jul 6, 2021 in Fasihi

0 votes

1 answer

Kwa kutumia vipengele vitano, onyesha maingiliano yaliyopo baina ya fasihi simulizi na fasihi andishi.

asked Jul 6, 2021 in Fasihi

0 votes

1 answer

Mwalimu Mstaafu- (Dumu Kayanda) “Hiari na mukhitari ni juu yako. Lakini yeye kafika nyumbani”. Eleza mambo makuu ambayo mwandishi anayaibua kabla na baada ya kutolewa kwa usemi huu.

asked Jul 6, 2021 in Tumbo Lisiloshiba na Hadithi Nyingine

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