A nonliving substance found in earth crust

What atomic or hybrid orbitals make up the sigma bond between br and f in bromine trifluoride, brf3?

mina [271]

<span>Draw the Lewis structure. Bromine has 3 bonds and two lone pairs for a trigonal bipyramidal electron geometry and an sp^3d hybridization. Fluorine is peripheral it does not require hybridization, but we often consider it to be hybridized too - it has 1 bond and 3 lone pairs for sp^3 hybridization. So the sigma bonds come from an overlap of an sp^3d orbital on Br with an sp^3 orbital on F. If you don't consider the F to be hybridized the overlap would have to be to a p orbital on the F</span>

8 0

4 years ago

In the following reaction, how many grams of nitroglycerin C3H5(NO3)3 will decompose to give 25 grams of CO2?

gogolik [260]

4C₃H₅(NO₃)₃ $_{(l)}$ ------> 12CO₂ $_{(g)}$ + 6N₂ $_{(g)}$ + 10H₂O $_{(g)}$ + O₂ $_{(g)}$

mol of CO₂ = $\frac{mass}{molar mass}$

= $\frac{25g}{44.01 g/mol}$

mol ratio of CO₂ : C₃H₅(NO₃)₃

12 : 4

∴ if mole of CO₂ = 0.568 mol

then " " C₃H₅(NO₃)₃ = $\frac{0.568 mol}{12} * 4$

= 0.189 mol

∴ mass of nitroglycerin = mole * Mr

= 0.189 mol * 227.0995 g / mol

= 43.00 g

8 0

3 years ago

1. The red light associated with the aurora borealis is emitted by excited oxygen atoms. This

stiv31 [10]

Answer:

Frequency = 0.005× 10¹⁷ s⁻¹

E = 0.03 × 10⁻²⁰KJ

Explanation:

Given data:

Wavelength of light = 630.0 nm (630 × 10⁻⁹ m)

Frequency of light = ?

Energy in joule = ?

Solution:

speed of light = wavelength × frequency

Frequency = speed of light / wavelength

Frequency = 3 × 10⁸ m/s / 630 × 10⁻⁹ m

Frequency = 0.005× 10¹⁷ s⁻¹

Energy:

E = h. f

E = 6.63× 10⁻³⁴ Kg. m²/s × 0.005× 10¹⁷ s⁻¹

E = 0.03 × 10⁻¹⁷ j

E = 0.03 × 10⁻¹⁷ j×1 kj /1000 j

E = 0.03 × 10⁻²⁰KJ

4 0

3 years ago

Please help!!!! Chem question

loris [4]

Answer : The net ionic equation will be,

$Ba^{2+}(aq)+SO_4^{2-}(aq)\rightarrow BaSO_4(s)$

Explanation :

In the net ionic equations, we are not include the spectator ions in the equations.

Spectator ions : The ions present on reactant and product side which do not participate in a reactions. The same ions present on both the sides.

The given balanced ionic equation will be,

$Ba(OH)_2(aq)+H_2SO_4(aq)\rightarrow 2H_2O(aq)+BaSO_4(s)$

The ionic equation in separated aqueous solution will be,

$Ba^{2+}(aq)+2OH^-(aq)+2H^{+}(aq)+SO_4^{2-}(aq)\rightarrow BaSO_4(s)+2H^+(aq)+2OH^{-}(aq)$

In this equation, $H^+\text{ and }OH^-$ are the spectator ions.

By removing the spectator ions from the balanced ionic equation, we get the net ionic equation.

The net ionic equation will be,

$Ba^{2+}(aq)+SO_4^{2-}(aq)\rightarrow BaSO_4(s)$

5 0

3 years ago

A factory produces 5,000,000 Ibuprofen tablets to fill an order. The bottle chosen for packaging holds 250 tablets. If the activ

vivado [14]

Answer:2,204 pounds Ibuprofen must the factory use to fill this order

Explanation:

Amount of Ibuprofen in 1 tablet = 200 mg

Amount of Ibuprofen in 5,000,000 tablet = $5,000,000\times 200mg=10^9 mg$

1 g = 1000 mg

Grams of Ibuprofen = $10^{6} g$

1 g = 0.002204 pounds

Pounds of Ibuprofen required to fulfill the order:

$10^6\times 0.002204 pounds=2,204 pounds$

2,204 pounds Ibuprofen must the factory use to fill this order

3 0

3 years ago