1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
vaieri [72.5K]
3 years ago
15

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:

  1. A lone pair
  2. An N-O single bond
  3. 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
Other questions:
  • If the root word engage means “to connect with something,” what does the word disengage mean in the following sentence?He diseng
    12·2 answers
  • What instrument is used to find the density of an object
    7·1 answer
  • If 7.83 g of H 2 is reacted with 15.7 g of O 2 in the reaction 2H2 + O2 → 2H2O , what is the limiting reagent?
    14·1 answer
  • ಠ_ಠ Need HELP ಠ_ಠ
    7·1 answer
  • How would an electron shell model of an oxygen atom (O) appear after the atom has formed chemical bonds?
    13·2 answers
  • Natural selection is defined as_____ a. the changes that occur in a population that do not affect survival. b. the changes in th
    15·1 answer
  • A 0.98 M solution of calcium chloride with a volume of 0.25 L is diluted to form a 0.74 M solution. What is the new volume of th
    13·1 answer
  • Explain why liquid freshwater is considered a limited resource.
    14·1 answer
  • Consider a iron-silver voltaic cell that is constructed such that one half-cell consists of the iron, Fe, electrode immersed in
    14·1 answer
  • What do acids do in solution?
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!