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enyata [817]
3 years ago
14

When ice forms, the __________ are farther apart than in liquid water, allowing the ice to form an organized crystal structure a

nd float?
Chemistry
1 answer:
Lisa [10]3 years ago
3 0
When ice forms, the molecules are farther apart than in liquid water, allowing the ice to form an organized crystal structure and float.
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Write 2 different scenarios of how livestock animals provide a service. (Example – Zoe the
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Answer:

Interacting with animals has been shown to decrease levels of cortisol (a stress-related hormone) and lower blood pressure. Other studies have found that animals can reduce loneliness, increase feelings of social support, and boost your mood.

Explanation:

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What ions are present when (nh4)2so4 is dissolved in water?
maksim [4K]
NHNH_{4}  ^{+}, SO _{4}  ^{2-} are the two ions
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A 20g sample of iron at a temperature of 120oC is placed into a container of water. There are 300 milliliters of water in the co
galben [10]

Answer:

30.63 °C will be the final temperature of the water.

Explanation:

Heat lost by iron will be equal to heat gained by the water

-Q_1=Q_2

Mass of iron = m_1=20 g

Specific heat capacity of iron = c_1=0.444 J/g^oC

Initial temperature of the iron = T_1=120^oC

Final temperature = T_2=T

Q_1=m_1c_1\times (T-T_1)

Volume of water = 300 ml

Density of water = 1 g/mL

Mass of water= m_2=300 mL\times 1 g/mL = 300 g

Specific heat capacity of water= c_2=4.184 J/g^oC

Initial temperature of the water = T_3=30^oC

Final temperature of water = T_2=T

Q_2=m_2c_2\times (T-T_3)

-Q_1=Q_2

-(m_1c_1\times (T-T_1))=m_2c_2\times (T-T_3)

On substituting all values:

we get, T =  30.63°C

30.63 °C will be the final temperature of the water.

4 0
3 years ago
Please help!!!
Strike441 [17]

Answer:

The above reaction is an example of <u>alcoholic fermentation</u>.

Explanation:

In alcoholic fermentation, one mole of glucose gets converted into two moles of alcohol, two moles of carbon dioxide and two moles of adenosine tri-phosphate (ATP).

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3 years ago
Which of the elements has the same Lewis dot structure as calcium (Ca)?
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It’s gonna be which ever element(s) that has the same number of valence electrons!!
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3 years ago
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