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dmitriy555 [2]
3 years ago
14

1 Mr. Chavez paid $14.32 total for 8 protein bars.

Chemistry
1 answer:
Gennadij [26K]3 years ago
4 0

Answer:

Option C. $1.79

Explanation:

From the question, were told that the total cost of 8 protein bar is $14.32.

Therefore, the cost of 1 protein bar will be = $14.32/8 = $1.79

You might be interested in
An iron has a net charge of 3+. If this job has 8 protons, how many electrons does it have
kati45 [8]

Answer:

5 electrons

Explanation:

When an atom loses are gain the electrons ions are formed.

There are two types of ions.

Anion

Cation

1 = Anion

It is formed when an atom gain the electrons. when atom gain electron negative charge is created on atom. For example.

X + e⁻ → X⁻

2= Cation

It is formed when an atom loses the electrons. when atom lose electron positive charge is created on atom. For example.

X → X⁺ + e⁻

When an atom loses three electrons +3 charge is created. If this atom have 8 protons it means there were 8 electrons too. When it lost three electrons then remaining number of electrons are 5.

X → X³⁺ + 3e⁻

4 0
3 years ago
Oxygen, nitrogen, and carbon are all ___________________.
Natalka [10]
Organic elements, depends on the context of the question but I suspect that is the answer. The organic elements are H,O,C,N,P,S
5 0
3 years ago
Caculate the number if moles of the following: 800. g of Ca
Maru [420]
Mole   is  equal  to   mass  of  the  element  divided  by   molar  mass  of  the  element.  that   is
mole=mass/molar  mass
From  periodic  table calcium  has  a   molar  mass  of  40   g/mol
moles  is   therefore  =800g/40g/mol=20moles
3 0
2 years ago
Calculate the net change in enthalpy for the formation of one mole of nitric acid from nitrogen, hydrogen and oxygen from these
deff fn [24]
The formation of nitric acid from nitrogen, hydrogen, and oxygen can be written as,

     N₂ + H₂ + 3O₂ --> 2HNO₃

The net enthalpy of formation of nitric acid is calculated by,
   Hrxn = Hproduct - Hreactant

Since all the reactants are in their elemental forms, the simplified equation would be,

    Hrxn = Hproduct 

Substituting,

    Hrxn = (-186.81 kJ/mol)(2 mols)

<em>Answer: -372.42 kJ</em>

7 0
3 years ago
13. Find the total number of atoms present in the following molecules. a. 5 H₂O b. Zn Cl₂​
olganol [36]

Answer:

A= 15 atoms B= 3

Explanation:

5 x 2 + 5 x 1

3 + 2 x 1

5 0
3 years ago
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