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2 years ago

Which era did we live on in 2008

Chemistry

2 answers:

devlian [24]2 years ago

6 0

Answer:

21st century

Explanation:

lukranit [14]2 years ago

5 0

The better era tbh.......

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What piece of lab equipment would you use to conduct a small chemical experiment?

Scrat [10]

test tube

Explanation:

you state it is small and a test tube is the smallest container out of the answers you listed

6 0

3 years ago

Read 2 more answers

How many bonding electrons are in the lewis structure of carbon monoxide, co?

arsen [322]

There are six (6) bonding electrons are in the lewis structure of carbon monoxide (CO).
In Lewis structure, there are ten (10) valence electrons of Carbon monoxide (CO). For lewis structure we need a triple bond between carbon and oxygen, so when electrons made a triple bond it means there is six bonding electrons in lewis structure of carbon monoxide.

6 0

2 years ago

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Wine goes bad soon after opening because the ethanol CH3CH2OH dissolved in it reacts with oxygen O2 gas to form water and aqueou

bagirrra123 [75]

Answer:

We need 0.095 moles of ethanol

Explanation:

Step 1: Data given

Number of moles water = 0.095 moles

Step 2: The balanced equation

CH3CH2OH + O2 ⇒ H2O + CH3COOH

Step 3: Calculate moles of ethanol

For 1 mol ethanol we need 1 mol oxygen to produce 1 mol water and 1 mol acetic acid

For 0.095 moles water, we need 0.095 moles ethanol and 0.095 moles oxygen

We need 0.095 moles of ethanol

5 0

3 years ago

Welding is an industrial process that is used to join pieces of metal. A certain mixture of gases used in welding is composed of

GarryVolchara [31]

The given question is incomplete. The complete question is :

Welding is an industrial process that is used to join pieces of metal. A certain mixture of gases used in welding is composed of carbon dioxide and argon. The partial pressure of carbon dioxide is 0.080 atm and the partial pressure of argon is 0.24 atm. What is the total pressure of the mixture.

Answer: 0.32 atm

Explanation:

According to Dalton's law, the total pressure is the sum of individual pressures.

$p_{total}=p_{CO_2}+p_{Ar}$

Given : $p_{total}$ =total pressure of gases = ?

$p_{CO_2}$ = partial pressure of carbon dioxide = 0.080 atm

$p_{Ar}$ = partial pressure of argon = 0.24 atm

putting in the values we get:

$p_{total}=0.080atm+0.24atm$

$p_{total}=0.32atm$

Thus the total pressure of the gases is 0.32 atm

8 0

2 years ago

A collection of pennies was investigated. 10.00% were found to have been minted in San Francisco with an average mass of 2.15 g

german

The average mass of the pennies in the sample is 2.16 g.

We have a set of pennies from which 10.00% have an average mass of 2.15 g and 90.00% have an average mass of 2.156 g. The average mass (am) of the whole set is a weighted average, that considers the mass (m) and the percentage (perc) of each group. We can calculate it using the following expression.

$am=\frac{\Sigma m \times perc }{100 \%} = \frac{2.15g \times 10.00\% + 2.156 g \times 90.00\% }{100\%} = 2.1554 g \approx 2.16 g$

The average mass of the pennies in the sample is 2.16 g.

You can learn more about weighted average here: brainly.com/question/18554478

5 0

2 years ago