3 years ago

What does group 4 in the periodic table all have in common

Chemistry

1 answer:

belka [17]3 years ago

8 0

Answer:

they are semi metals, so they have the properties of semimetals in commen

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Determine how many atoms of pure silver will be created when 19.83 x 1023 atoms of copper are used in the following reaction:

Lubov Fominskaja [6]

Answer:

$\boxed{3.966 \times 10^{24}\text{ atoms of Ag}}$

Explanation:

(a) Balanced equation

Cu + 2AgNO₃ ⟶ Cu(NO₃)₂+ 2Ag

(b) Calculation

You want to convert atoms of Cu to atoms of Ag.

The atomic ratio is ratio is 2 atoms Ag:1 atom Cu

$\text{Atoms of Ag} = 19.83 \times 10^{23}\text{atoms Cu} \times \dfrac{\text{2 atoms Ag}}{\text{1 atom Cu}}\\\\= 3.966 \times 10^{24}\text{ atoms of Ag}\\\\\text{The reaction will produce }\boxed{\mathbf{3.966 \times 10^{24}}\textbf{ atoms of Ag}}$

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i believe its true bc ik for sure air is a homogenous mixture

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Express 7.25 in scientific notation

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Considering that scientific notation has to move the decimal over so there is only one digit in the Tens place, that is the scientific notation.

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What causes the pressure inside oxygen tanks to change as they are filled?

jonny [76]

Answer:

The answer would be D.

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Explanation:

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A generator does work on an electric heater by forcing an electric current through it. Suppose 1 kJ of work is done on the heate

azamat

Answer:

The change in internal energy of the heater is 0 kJ

Explanation:

∆U = Q - W

Q is quantity of heat transferred = 1 kJ

W is work done on the heater = 1 kJ

Change in internal energy (∆U) = 1 - 1 = 0 kJ

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