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3 years ago

What family are the elements carbon, germanium and lead in?

Chemistry

2 answers:

snow_tiger [21]3 years ago

7 0

Answer: Group 14 is the carbon family/group

grin007 [14]3 years ago

5 0

Answer:

Damian here!! :))

The carbon family consists of the elements carbon (C), silicon (Si), germanium (Ge), tin (Sn), lead (Pb), and flerovium (Fl). Atoms of elements in this group have four valence electrons. The carbon family is also known as the carbon group, group 14, or the tetrels. Elements in this family are of key importance for semiconductor technology.

Explanation:

Hope this helps? :))

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Write the answer in scientific notation when you multiply 2 x 104 by 3 x 104.

emmasim [6.3K]

Answer:

6× 10⁸

Explanation:

We need to find the multiplication of 2 x 10⁴ by 3 x 10⁴.

2 x 10⁴ × 3 x 10⁴

= (3 × 2) x 10⁴ x 10⁴

= 6 x 10⁴ x 10⁴

= 6 × 10⁴⁺⁴

= 6× 10⁸

Hence, the required answer is 6× 10⁸.

7 0

2 years ago

Determine the mass of SO₂ that contains 6.075 × 10^26 S atoms.

Misha Larkins [42]

Avogadro's law states that in a mole of any substance, there are $6.022 \times 10^{23}$ atoms. This means that in the given sample, there are

$\frac{6.075 \times 10^{26}}{6.022 \times 10^{23}}=1008.8010627 \text{ mol}$

The atomic mass of sulfur is 32.06 amu.
The atomic mass of oxygen is 15.9994 amu.

So, the atomic mass of sulfur dioxide is

$32.06+2(15.9994=64.0588 \text{ g/mol}$

Therefore, the mass is:

$(64.0588)(1008.8010627)=\boxed{64620 \text{ g (to 4 sf)}}$

7 0

1 year ago

Match each lab incident to the item of PPE that will protect you from it. Each item of PPE will only be used once.

andre [41]

Answer:

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Explanation:

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5 0

3 years ago

5) The spacing filling models for two diatomic molecules are shown below.

mote1985 [20]

Answer:

chill

Explanation:

4 0

3 years ago

How many grams of oxygen are produced when 7.65 moles of water is decomposed

maksim [4K]

Answer:

The answer to your question is 122.4 g of O₂

Explanation:

Data

mass of O₂ = ?

moles of H₂O = 7.65

Process

1.- Write the balanced chemical reaction

2H₂O ⇒ 2H₂ + O₂

2.- Convert the moles of H₂O to grams

molar mass of H₂O = 2 + 16 = 18 g

18 g of H₂O ---------------- 1 mol

x ----------------- 7.65 moles

x = (7.65 x 18) / 1

x = 137.7 g H₂O

3.- Calculate the grams of O₂

36 g of H₂O -------------------- 32 g of O₂

137.7 g of H₂O ------------------- x

x = (32 x 137.7) / 36

x = 122.4 g of O₂

6 0

3 years ago