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pishuonlain [190]

3 years ago

9

4. Suppose the temperature inside a sealed container increases. How do you expect this change to affect the partial pressure of

each gas in a mixture of gases inside the container? How does it affect the total pressure?

1 answer:

Delvig [45]3 years ago

5 0

Answer:

no

Explanation:

no

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Where can cast fossils be found? (science)

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Fossils can be found in rocks and stones and sometimes in shells.

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How are cellular respiration and photosynthesis similar

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3 years ago

BRAINLIEST IF ANSWERED CORRECTLY WITH EXPLANATION! HELP PLEASE:)

elena-14-01-66 [18.8K]

First question

$Pb(NO_3)_2 + KI \rightarrow PbI_2 + KNO_3$

Balaneced:

$Pb(NO_3)_2 + 2KI \rightarrow PbI_2 + 2KNO_3$

Find how many moles potassium iodide it is in 345.0 grams

$n_{KI} = \frac{345.0 \ g}{166.0 \ g/mol} = 2.078 \ mole$

Find how many moles potassium nitrate there is for 2.078 moles $KI$

$n_{KNO_3} = \frac{2}{2} \cdot n_{KI} = 2.078 \ mole$

Find how many grams potassium nitrate there is in 2.078 moles $KNO_3$

$m_{KNO_3} = 2.078 \ mol \cdot 101.1 \ g/mol = 210.1 \ g$

Second question

$yield \ \% = \frac{experimental}{theoretical} \cdot 100 = \frac{195.3 \ grams}{210.1 \ grams} \cdot 100 = 93.0 \ \%$

4 0

3 years ago

Which statements describe abiotic factors in an environment? Check all that apply.

olga nikolaevna [1]

Soil retains water and nutrients.

Several rocks rest in a stream.

Clouds create shade that changes temperatures

Abiotic factors are non-living components in the environment, or rather components in the environment that are not derived from life.

Explanation:

Abiotic factors interact with biotic factors to create ecoystems. An example of biotic factors interacting with abiotic factors include plants utilizing sunlight for photosynthesis and a wild beast drinking water form a watering hole in the middle of the savanna.

Learn More:

For more on biotic and abiotic factors check out;

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#LearnWithBrainly

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Classify the compound below as an alkane, alkene, alkyne, alcohol, aldehyde, amine, and so forth

Gnoma [55]

<em>Answer:</em>

Organic compounds are those which are derivatives of hydrocarbons. They are classified into following functional groups.

<em>Alkane: </em>

Alkane are simplest hydrocarbons.
They have general formula CnH2n+2. These hydrocarbons contain single bond.
For example ethane , H3C----CH3.

<em>Alkene:</em>

Alkene are most reactive.
They have general formula CnH2n.
These contain double bond in their structure.
For example , ethene, H2C=CH2

<em>Alkyne:</em>

These are less less reactive as compare to alkenes.
They have general formula CnH2n-2.
They contain triple bonds in their structure.
For example Acetylene HC≡CH

<em>Alcohol:</em>

Alcohol have functional group OH. They have general formual R---OH, R may be alkyl group.For example Ethanol H3CH2C---OH

<em>Amine:</em>

Amine contain NH2 F.G.
They have general formula R---NH2.
There are three types of amine like primary, secondary and tertiary amine.
For example H3CH2C---NH2

<em>Aldehyde:</em>

Aldehydes have CHO F.G .
They have general formula R--CHO.
For example H3CH2C---CHO

<em>Ketone:</em>

Ketones have R--CO--R functional group.
For example acetone H3C---CO---CH3

<em>Carboxylic acid:</em>

They functional group COOH.
Their general formula is R---COOH.
For example Acetic acid H3C---COOH

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3 years ago