3 years ago

1. 4 Fe + 302 → 2 Fe,03

Chemistry

1 answer:

klasskru [66]3 years ago

4 0

Answer:

1. 5.093 moles

2. 0.33 (rounded) moles

Explanation:

working out in image

You might be interested in

Calcium chloride is added to the roadways after a snowstorm. Which colligative property is being showcased here?

Annette [7]

Answer:

D. freezing point depression

Explanation:

8 0

3 years ago

11mg of cyanide per kilogram of body weight is lethal for 50% of domestic chickens. How many grams per kilogram of body weight i

Nookie1986 [14]

Answer:

$0.033g$

Explanation:

Hello,

In this case, since 11 mg per kilogram of body weight has the given lethality, the mg that turn out lethal for a chicken weighting 3 kg is computed by using a rule of three:

$11mg\longrightarrow 1kg\\\\x\ \ \ \ \ \ \longrightarrow 3kg$

Thus, we obtain:

$x=\frac{3kg*11mg}{1kg}\\ \\x=33mg$

That in grams is:

$=33mg*\frac{1g}{1000mg} \\\\=0.033g$

Regards.

7 0

3 years ago

Given its formula and Avogadro's Number (6.02 x 10^23 molecules/mol), deduce how many molecules are present in 3 x 10^-16 grams

marissa [1.9K]

Answer:

5 × 10⁵ molecules (500,000 molecules)

Explanation:

Step 1: Convert 3 × 10⁻¹⁶ g to moles

We will use the molar mass of TCDD (321.97 g/mol).

3 × 10⁻¹⁶ g × 1 mol/321.97 g = 9 × 10⁻¹⁹ mol

Step 2: Convert 9 × 10⁻¹⁹ mol to molecules

The required conversion factor is Avogadro's number (6.02 × 10²³ molecules/mol).

9 × 10⁻¹⁹ mol × 6.02 × 10²³ molecules/1 mol = 5 × 10⁵ molecules

3 0

3 years ago

What is included in counting the electron domain around the central atom vsepr theory

In-s [12.5K]

Answer:

Lone pairs and bonding pairs

Explanation:

The electron domain around the central atom includes

All lone pairs on the central atom
All bonding pairs between the central atom and the atoms directly attached to it

Double and triple bonds count as single domains.

Thus, the nitrite ion has three electron domains:

A lone pair
An N-O single bond
An N-O double bond

4 0

4 years ago

What happens when light enters water?

TiliK225 [7]

D. It slows down
It slows down because the water keeps its from sinking

5 0

2 years ago

Read 2 more answers