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Verdich [7]
3 years ago
9

HELP ASAP PLEASE!!!!!!!!!!!

Chemistry
1 answer:
miss Akunina [59]3 years ago
4 0
I believe it's C.

Abiotic limiting factors include water, temperature, wind speeds, sunlight, and more. Look up abiotic limiting factors.

Good luck! I hope this helped.
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A sample of helium has a volume of 3.49 L at 741 mmHg. What would be the volume if the pressure
Naddika [18.5K]

P1: 741 mmHg

V1: 3.49 L P1 x V1 / P2= (741 mmHg) (3.49 L) / 760 mmHg = 3.40 L

P2: 760 mmHg

V2: ? L

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3 years ago
Mara and ivy are asked to identify two minerals in science class. To do this, they decided to study the physical properties of t
scZoUnD [109]

Answer:

2 only is a pretty accurate answer the others dont make sense  to me.

Explanation:

8 0
3 years ago
Read 2 more answers
Can anyone help me in doing this question?
Alecsey [184]

1. No. 108 g of Ag has a lower number of atoms than 80 g of Ca.

2. The gram of SO_3 in 3 moles of the compound would be 240 g.

3. 1.20 x 10^{24 atoms

4. The grams of hydrogen in 3.6 x 10^{24 molecules of NH_3 would be 18 grams.

<h3>Number of atoms in compounds</h3>

According to Avogadro, 1 mole of a substance contains 6.022 x 10^{23 molecules or atoms.

Recall that: mole = mass/molar mass

1. 108 g of Ag would be equivalent to: 108/108 = 1 mol.

80 g of Ca would be equivalent to: 80/40 = 2 mol

Since 1 mol is equivalent to 6.022 x 10^{23 molecules or atoms, it means 80 g of Ca has twice as atoms as 108 g of Ag.

2. 3 mol sample of SO_3 would be equivalent to: 3 x 80 = 240 g

3. 124 g of Na_2O would be equivalent to: 124/62 = 2 mol

Number of atoms = 2 x 6.022 x 10^{23

                              = 1.20 x 10^{24 atoms

4. 3.6 x 10^{24 molecules of NH_3 would be equivalent to:

  3.6 x 10^{24/6.022 x 10^{23 = 6 mol of NH_3

NH_3 --- > 3H^+ + N^{3-

From the above equation, 1 mole of NH_3 produces 3 moles of hydrogen.  Thus,  6 moles of  NH_3 would be equivalent to 18 moles of hydrogen.

18 moles of hydrogen = 18 x 1

                                    = 18 g

More on the number of atoms in samples can be found here: brainly.com/question/28834341

#SPJ1

5 0
1 year ago
PLZ HELP HURRY PLZZZZZ WILL GIVE BRAINLIEST
Amiraneli [1.4K]

Answer:

I think its b

Explanation:

6 0
4 years ago
Thermal Energy and Chemical Reactions
elixir [45]

Answer:

Mark as brainliest if it helped Thanks!!

Explanation:

Chemical reactions often involve changes in energy due to the breaking and formation of bonds. Reactions in which energy is released are exothermic reactions, while those that take in heat energy are endothermic.

Chemical reaction, a process in which one or more substances, the reactants, are converted to one or more different substances, the products. Substances are either chemical elements or compounds. A chemical reaction rearranges the constituent atoms of the reactants to create different substances as products.

Thermal energy (also called heat energy) is produced when a rise in temperature causes atoms and molecules to move faster and collide with each other. The energy that comes from the temperature of the heated substance is called thermal energy.

Credits:

Energy Changes in Chemical Reactions | Introduction to ...

chemical reaction | Definition, Equations, Examples, & Types ...

Thermal Energy - Knowledge Bank - Solar Schools

3 0
4 years ago
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