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ololo11 [35]
3 years ago
15

How does nectar provide energy for a humming bird

Chemistry
1 answer:
Greeley [361]3 years ago
6 0

Nectar contains a high concentration of sucrose (sugar).

When hummingbirds ingest the nectar, their cells use oxygen to convert it into carbon dioxide and water.

The oxidation of sucrose releases a large amount of energy, which the birds can use for flapping their wings, etc.

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Space exploration was aided most by the
densk [106]

Explanation:

Space exploration was aided most by the use of liquid fuel.

<em>Hope</em><em> </em><em>this helps</em><em>.</em><em>.</em><em> </em>

3 0
4 years ago
Read 2 more answers
Complete the balanced molecular chemical equation for the reaction below. If no reaction occurs, write NR after the reaction arr
Nostrana [21]

Answer: Pb(NO_3)_2(aq)+2KI(aq)\rightarrow PbI_2(s)+2KNO_3(aq)

Explanation:

A double displacement reaction is one in which exchange of ions take place. The salts which are soluble in water are designated by symbol (aq) and those which are insoluble in water and remain in solid form are represented by (s) after their chemical formulas.

The double displacement reaction in which one of the product is formed as a solid is called as precipitation reaction.

The balanced molecular equation is:

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

8 0
3 years ago
To achieve the highest return during recrystallization of a given solid, one must: Group of answer choices Add the minimum amoun
TiliK225 [7]

Answer:

Option A

Explanation:

Addition of too much of solvent will make the solution dilute due to which the crystals will not form. Hence option D is incorrect

On the other hand adding a minimum amount of boiling solvent will give a saturated solution for recrystallization. Hence, option A is incorrect

Addition of cold solvent will lower the rate of formation of crystals. Hence, both option B and C are incorrect

4 0
3 years ago
There are 85.63 g of CO2 gas in a container maintained at STP. How many liters of CO2 are there in that container?
konstantin123 [22]

Answer:

V = 48.64 L

Explanation:

Given data:

Mass of CO₂ = 85.63 g

Temperature = 273 K

Pressure = 1 atm

Volume of CO₂ = ?

Solution:

Number of moles of CO₂:

Number of moles = mass/molar mass

Number of moles = 85.63 g / 40 g/mol

Number of moles = 2.14 mol

Volume in Litter:

PV = nRT

R = general gas constant = 0.0821 atm.L/mol.K

1 atm× V = 2.14 mol ×0.0821 atm.L/mol.K  ×273 K

V = 48.64 atm.L / 1 atm

V = 48.64 L

7 0
3 years ago
What volume of 2.5% (m/v) koh can be prepared from 125 ml of a 5.0% (m/v) koh solution?
disa [49]
     the  volume  of   2.5% m/v    koh  which  can  prepared  from  125  ml  of  a  5%  koh  solution  is  calculated  using  the  following  formula

 m1v1=  m2 v2

M1= 5/100=  0.05
v1=   125
m2=2.5/100=0.025
V2=?
v2=  m1v1/m2

=0.05  x125  /0.025=250  ml
8 0
3 years ago
Read 2 more answers
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