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True [87]
3 years ago
9

What is a hypothesis?

Chemistry
2 answers:
Aloiza [94]3 years ago
8 0
A proposed answer to a question i beige
Kitty [74]3 years ago
5 0

Answer:

B

Explanation: it is the correct answer

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If you have 2.4L of SO2 gas (at STP) how many moles of sulfur dioxide do you have?
Andru [333]

Answer:

0.107 mole of SO2.

Explanation:

1 mole of a gas occupy 22.4 L at standard temperature and pressure (STP).

With the above information, we can simply calculate the number of mole of SO2 that will occupy 2.4 L at STP.

This can be obtained as follow:

22.4 L contains 1 mole of SO2.

Therefore, 2.4 L will contain = 2.4/22.4 = 0.107 mole of SO2.

Therefore, 0.107 mole of SO2 is present in 2.4 L at STP.

4 0
3 years ago
How many moles of sodium atoms are contained in 3.5 moles of sodium sulfide
Aliun [14]

Answer:

7 moles

Explanation:

The molecular formula of sodium sulfide is Na_2S

One molecule of Sodium sulfide has 2 atoms of sodium and one atom of sulfur

1 mole of Sodium sulfide has  2 moles of sodium and one mole of sulfur

so 3.5 moles of sodium sulfide will have 2× 3.5 moles of sodium atoms

i.e 2×3.5= 7 moles of sodium atom

7 0
4 years ago
0. Give an example of how an organism can use surface tension.<br><br><br>​
Lady_Fox [76]

Answer:

In case of plants surface tension help to support the transpiration pull.

Explanation:

Surface tension is a force that hold the molecules in the surface to minimize the surface area.

   During evaporation of excess amount of water from the stomata of leaves of plants by transpiration a surface tension is generated.

   The generated surface tension helps to maintain the water column within the xylem tissue by the absorption of water from the soil by the roots.

3 0
4 years ago
How many moles of sodium must react completely to produce 0.175 moles of sodium
polet [3.4K]

Answer:

You can view more details on each measurement unit: molecular weight of Sodium Nitrate or mol The molecular formula for Sodium Nitrate is NaNO3. The SI base unit for amount of substance is the mole. 1 grams Sodium Nitrate is equal to 0.011765443644878 mole.

Explanation:

5 0
3 years ago
A.<br> B.<br> C.<br> D.<br><br> Help me please?
Rina8888 [55]

Answer:

B: it allow quick conversation to others

6 0
3 years ago
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