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nignag [31]
3 years ago
10

All of the following are indicators of chemical change except…

Chemistry
1 answer:
Oduvanchick [21]3 years ago
7 0
D. All of the above are indicators of chemical change
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aliina [53]

Answer:

Recessive and Dominant

Explanation:

3 0
3 years ago
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How many moles of oxygen are required to produce 37.15 g CO2? 37.15 g CO2 = mol O2
NNADVOKAT [17]

Answer:

0.84 moles of oxygen are required.

Explanation:

Given data:

Mass of CO₂ produced = 37.15 g

Number of moles of oxygen = ?

Solution:

Chemical equation:

C + O₂     →     CO₂

Number of moles of  CO₂:

Number of moles = mass/molar mass

Number of moles = 37.15 g/ 44 g/mol

Number of moles = 0.84 mol

Now we will compare the moles of oxygen and carbon dioxide.

                          CO₂         :       O₂  

                              1           :         1

                            0.84       :       0.84

0.84 moles of oxygen are required.

6 0
3 years ago
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4. Which two compounds contain the same total number of atoms?
Alja [10]

Answer:

b

Explanation:

Atom is the smallest particle of an element

7 0
3 years ago
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What does GCAT help us remember?
vazorg [7]
It helps us remember the four bases of dna
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Is Calcium oxide (CaO) covalent or ionic?
Paul [167]

Answer:

Calcium oxide (CaO)is ionic.

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