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guapka [62]
3 years ago
13

Which of the following statements is true?

Chemistry
2 answers:
Ray Of Light [21]3 years ago
6 0

Answer: Metals tend to gain electrons.

Explanation: Hope this helps!!! Have an amazing day!

cupoosta [38]3 years ago
4 0

Answer:

All of the above

Explanation:

Metals tend to lose electrons and nonmetals tend to gain electrons. So if two of them are correct and you can only choose one, it has to be all of the above.

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Equation: CH4 + 202 CO2 + 2H20
jeka94

Answer:

2:1

1.2 × 10² g

Explanation:

Step 1: Write the balanced combustion equation

CH₄ + 2 O₂ ⇒ CO₂ + 2 H₂O

Step 2: Establish the appropriate molar ratio

According to the balanced equation, the molar ratio of O₂ to CH₄ is 2:1.

Step 3: Calculate the moles of CH₄ required to react with 15 moles of O₂

We will use the previously established molar ratio.

15 mol O₂   1 mol CH₄/2 mol O₂ = 7.5 mol CH₄

Step 4: Calculate the mass corresponding to 7.5 moles of CH₄

The molar mass of CH₄ is 16.04 g/mol.

7.5 mol × 16.04 g/mol = 1.2 × 10² g

4 0
3 years ago
An ecologist studies the relationships among organisms. The work of an ecologist will most likely help solve problems related to
Lerok [7]

Answer: The protection of the environment.  

Explanation: An ecologist refers to an individual who handles the ecosystem and its constituents to perform surveys and evaluate the behavior and diversity of various species. They examine the association between the surrounding and its living things. They work for environmental consulting agencies, NGOs, and the government, and helps them in doing research and creating protocols and rules for the protection of the environment.  

6 0
3 years ago
What percent of the sun’s light does the moon reflect back? Why is it such a low number?
Ugo [173]

Answer:

loqsa s pa wah

Explanation:

7 0
3 years ago
Hello there!
Alenkasestr [34]

Answer:

Mass of carbon dioxide = 7.48 g

Explanation:

Given data:

Mass of lithium carbonate = 12.5 g

Mass of carbon dioxide produced = ?

Solution:

Chemical equation:

Li₂CO₃  →  Li₂O + CO₂

Number of moles of Li₂CO₃:

Number of moles = mass/ molar mass

Number of moles = 12.5 g /73.89 g/mol

Number of moles = 0.17 mol

Now we will compare the moles of Li₂CO₃  with CO₂.

                   Li₂CO₃        :            CO₂

                     1                :               1

                  0.17             :             0.17

Mass of carbon dioxide:

Mass of carbon dioxide = number of moles × molar mass

Mass of carbon dioxide =   0.17 mol ×  44 g/mol

Mass of carbon dioxide = 7.48 g

4 0
3 years ago
How many atoms are in an oxygen molecule (O 2 ) ?
saw5 [17]

Answer:

2

Explanation:

8 0
3 years ago
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