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Shkiper50 [21]
3 years ago
7

15

Chemistry
1 answer:
Vinil7 [7]3 years ago
5 0

Answer:

barium and silicon has same valence electrons

Explanation:

barium-2,8,18,18,8,2

neon-2,8

silicon-2,8,2,2

carbon-2,4

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Combustion of 9.511 grams of c4h10 will yield ____ grams of CO2
Flauer [41]

Answer:

\boxed{28.81}

Explanation:

We know we will need an equation with masses and molar masses, so let’s gather all the information in one place.  

M_r:      58.12                   44.01

           2C₄H₁₀ + 13O₂ ⟶ 8CO₂ + 10H₂O

m/g:     9.511

1. Moles of C₄H₁₀

\text{Moles of C$_{4}$H$_{10} $} = \text{ 9.511 g C$_{4}$H$_{10} $} \times \dfrac{\text{1 mol C$_{4}$H$_{10} $}}{\text{ 58.12 g C$_{4}$H$_{10} $}} = \text{0.1636 mol C$_{4}$H$_{10}$}

2. Moles of CO₂

The molar ratio is 8 mol CO₂:2 mol C₄H₁₀

\text{Moles of CO}_{2} =\text{0.1636 mol C$_{4}$H$_{10} $} \times \dfrac{\text{8 mol CO}_{2}}{\text{2 mol C$_{4}$H$_{10}$}} = \text{0.6546 mol CO}_{2}

3. Mass of CO₂

\text{Mass of CO}_{2} = \text{0.6546 mol CO}_{2} \times \dfrac{\text{44.01 g CO}_{2}}{\text{1 mol CO}_{2}} = \textbf{28.81 g CO}_{2}\\\\\text{The combustion will form $\boxed{\textbf{28.81 g CO}_{2}}$}

8 0
3 years ago
What is the the top of the wave called
Len [333]

The top of a wave is called the wave crest.

5 0
3 years ago
A piece of unknown metal with mass 68.6 g is heated to an initial temperature of 100 °C and dropped into 8.4 g of water (with an
Elden [556K]

Ans1.717

Explanation:

8 0
3 years ago
Name the following ionic compounds: (a) K2Cr2O7, (b) Li2C2O4, (c) CuNO3.
Elis [28]

Answer :

(a) The name of K_2Cr_2O_7 is, potassium dichromate.

(b) The name of Li_2C_2O_4 is, lithium oxalate.

(c) The name of CuNO_3 is, copper nitrate.

Explanation:

Ionic compound : It is a type of compound that is made up of the ions of the two different elements in which one element is a metal and another element is a non-metal.

(a) K_2Cr_2O_7

The given compound K_2Cr_2O_7 is an ionic compound. It is made up of two different ions which are potassium ion (K^+) and dichromate ion (Cr_2O_7^{2-}).

So, the name of K_2Cr_2O_7 is, potassium dichromate.

(b) Li_2C_2O_4

The given compound Li_2C_2O_4 is an ionic compound. It is made up of two different ions which are lithium ion (Li^+) and oxalate ion (C_2O_4^{2-}).

So, the name of Li_2C_2O_4 is, lithium oxalate.

(c) CuNO_3

The given compound CuNO_3 is an ionic compound. It is made up of two different ions which are copper ion (Cu^+) and nitrate ion (NO_3^{-}).

So, the name of CuNO_3 is, copper nitrate.

4 0
3 years ago
Which state of matter takes the shape but NOT the volume of its container?
Mumz [18]

Answer:

solids and liquids

Explanation:

3 0
4 years ago
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