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vfiekz [6]
3 years ago
10

Which usually have no luster metals, nonmetals and metalloids

Chemistry
2 answers:
Levart [38]3 years ago
7 0
More information please?
Aneli [31]3 years ago
6 0

non-metals because its dull luster means shiny

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Balance these equations!<br> 1)<br> AIBr; +<br> K-<br> KBr +<br> AI
Tema [17]

Answer:

Instructions on balancing chemical equations:

Enter an equation of a chemical reaction and click 'Balance'. The answer will appear below

Always use the upper case for the first character in the element name and the lower case for the second character. Examples: Fe, Au, Co, Br, C, O, N, F.     Compare: Co - cobalt and CO - carbon monoxide

To enter an electron into a chemical equation use {-} or e

To enter an ion specify charge after the compound in curly brackets: {+3} or {3+} or {3}.

Example: Fe{3+} + I{-} = Fe{2+} + I2

Substitute immutable groups in chemical compounds to avoid ambiguity.

For instance equation C6H5C2H5 + O2 = C6H5OH + CO2 + H2O will not be balanced,

but PhC2H5 + O2 = PhOH + CO2 + H2O will

Compound states [like (s) (aq) or (g)] are not required.

If you do not know what products are enter reagents only and click 'Balance'. In many cases a complete equation will be suggested.

Reaction stoichiometry could be computed for a balanced equation. Enter either the number of moles or weight for one of the compounds to compute the rest.

Limiting reagent can be computed for a balanced equation by entering the number of moles or weight for all reage

Explanation:

3 0
2 years ago
204 g of Thallium &amp; 35 g of chlorine?
r-ruslan [8.4K]
204Tl, syn, 3.78 y, β · Pb · ε · Hg. 205Tl, 70.5%, stable. Category: Thallium · view · talk · edit. | references. Thallium is a chemical element with the symbol Tl and atomic number 81. It is a gray ... The radioisotope thallium ...
6 0
3 years ago
How conditions on Earth would be different if its axis of rotation were vertical instead of tilted.
kykrilka [37]

Answer:

there would be different times because the sun and moon are in different places and one side would be sunny for a long time

Explanation:

3 0
3 years ago
Read 2 more answers
We know that for a given reaction when the temperature increases from 100 k to 200 k the rate constant doubles. What is the acti
Alenkasestr [34]

Answer:

The activation energy of the reaction is 1.152 kJ/mol.

Explanation:

Activation energy is the minimum amount which is absorbed by the reactant molecules to undergo chemical reaction.

Initial temperature of reaction = T_1=100 K

Final temperature of reaction = T_2=200 K

Initial rate of the reaction at 100 k = K_1=k

Final rate of the reaction at 200 k = K_2=2k

Activation energy is calculated from the formula:

\log\frac{K_2}{K_1}=\frac{E_a}{2.303\times R}(\frac{T_2-T_1}{T_1T_2})

R = Universal gas constant = 8.314 J/ K mol

\log\frac{2k}{k}=\frac{E_a}{2.303\times 8.314 J/K mol}(\frac{200 K-100K}{200 K\times 100K})

E_a=1,152.772 J/mol=1.152 kJ/mol

5 0
3 years ago
How might this graph be different if the farmers had grown a wide variety of potato plants or had included other crops in their
mote1985 [20]

The graph would not have plummeted if various species were planted due to improvement of the potato crops.

<h3>What is variety?</h3>

The term variety has to do with the planting of different species of plants on the same farm. We know that the planting of different species of the same crop helps to improve the resistance to diseases of a plant.

Hence, the graph would not have plummeted if various species were planted due to improvement of the potato crops.

Learn more about improved specie:brainly.com/question/3627477

#SPJ1

3 0
2 years ago
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