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2 years ago

Both algae and amoeba are in the domain Eukarya. Which of the following characteristics do they most likely share?

Chemistry

1 answer:

TiliK225 [7]2 years ago

5 0

Answer: They both have cells with membrane- bound organelles.

Explanation:

The domain eukarya includes the eukaryotic organisms, which range in diversity from single celled to multicellular. These organisms have cells that have membrane bound organelles, nucleus is present in them. These organisms range from simple to complex life cycles.

Hence, both algae and amoeba which belong to domain eukarya have membrane bound organelles in their cells.

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Using the following equation 5KNO2+2KMnO4+3H2SO4=5KNO3+2MnSO4+K2SO4+3H20. Starting with 2.47 grams of KNO2 and excess KMnO4 how

Aleonysh [2.5K]

Given equation : $5KNO_{2} + 2KMnO_{4} + 3H_{2}SO_{4}\rightarrow 5KNO_{3} + 2MnSO_{4} + K_{2}SO_{4} + 3H_{2}O$

Given information = 2.47 grams KNO2 and excess KMnO4 and we need to find grams of water (H2O).

Since KMnO4 is in excess, so grams of water(H2O) can be calculated using grams of KNO2 with the help of stoichiometry.

To find grams of water(H2O) from grams of KNO2 , we need to follow three steps.

Step 1. Convert 2.47 grams of KNO2 to moles of KNO2.

$Moles = \frac{grams}{molar mass}$

Molar mass of KNO2 = 85.10 g/mol

$Moles = 2.47 gram KNO2\times \frac{1 mol KNO2}{85.10 gram KNO2}$

Moles = 0.0290 mol KNO2

Step 2. Convert moles of KNO2 to moles of H2O using mole ratio.

Mole ratio are the coefficient present in front of the compound in the balanced equation.

Mole ratio of KNO2 : H2O is 5 : 3 (5 coefficient of KNO2 and 3 coefficient of H2O)

$0.0290 mol KNO2\times \frac{3 mol H2O}{5 mol KNO2}$

Mole = 0.0174 mol H2O

Step 3. Convert mole of H2O to grams of H2O

Grams = Moles X molar mass

Molar mass of H2O = 18.00 g/mol

$Grams = 0.0174 mol H2O\times \frac{18 g H2O}{1 mol H2O}$

Grams of water = 0.313 grams H2O

Summary : The above three steps can also be done in a singe setup as shown below.

$2.47 gram KNO2\times \frac{(1 mol KNO2)}{(85.10 gram KNO2)}\times \frac{(3 mol H2O)}{(5 mol KNO2)}\times \frac{(18.00 gram H2O)}{(1mol H2O)}$

In the above setup similar units get cancelled out and we will get grams of H2O as 0.313 grams water (H2O)

8 0

3 years ago

How many moles are in 9.8 x 1024 atoms of calcium?

Ratling [72]

Explanation:

no of moles = no of atoms ÷ avogadro's number

= (9.8×10^24) ÷ (6.02×10^23)

4 0

3 years ago

Will upvote

damaskus [11]

I believe the correct answer from the choices listed above is the third option. A ball falling through the air has both potential energy because it still has a distance to move before it hits the ground and kinetic energy because it is moving. Hope this answers the question. Have a nice day.

6 0

3 years ago

How did satellite tracking allow biologists to study the green sea turtle?

Rasek [7]

Answer:

It helped biologists collect data on when and where turtles travel.

Explanation:

Green sea turtles need to be conserved so the biologist take help of satellites in order to track down green sea turtles.

The tracking of green sea turtles can be done by the help of satellites as satellites send a signal whenever these turtles come to surface of water to breathe which can then be used to prevent the turtles from getting caught by poachers.

4 0

2 years ago

Read 2 more answers

Which property of chlorine explains why it is likely to form a compound with an alkali metal

Aleksandr [31]

Answer:

a. It will accept one electron to complete its outer shell.

Explanation:

Chlorine is in Group 17, so it has seven valence electrons, one short of a complete outer shell.

Thus, it will accept an electron from sodium to complete its outer shell.

4 0

3 years ago