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3 years ago

Explain why the population of trout might increase if the population of frogs decreased

1 answer:

6 0

If the population of frogs decreased, an animal that eats frogs and trout will decrease because it's food source is declining. Then, since the predator population is declining, the trout population will increase. The trout will have less predators to worry about.

Hope this helps... mark as Brainliest plz

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Living organisms contain carbon compounds.

mash [69]

Answer:

Living organisms do contain carbon compounds. This is true.

Explanation:

7 0

3 years ago

Read 2 more answers

Agas has a pressure of 6.58 kPa at 540 K. What will the pressure be at 210 K if the volume

WARRIOR [948]

Answer:

$P_2=2.6kPa$

Explanation:

Hello there!

In this case, according to the Gay-Lussac's gas law, which illustrates the pressure-temperature behavior as a directly proportional relationship:

$\frac{P_2}{T_2}=\frac{P_1}{T_1}$

We can solve for the final pressure as shown below:

$P_2=\frac{P_1T_2}{T_1}$

Thus, we plug in the initial pressure and temperature and final temperature to obtain:

$P_2=\frac{6.58kPa*210K}{540K}\\\\ P_2=2.6kPa$

Which is not among the choices.

Regards!

3 0

3 years ago

How many milliliters of 0.130 M HCl are needed to completely neutralize 41.0 mL of 0.107 M Ba(OH)2 solution?

Anvisha [2.4K]

54 mL Ba(OH)2x(0.101 mol Ba(OH)2/1000 mL) x (2 mol OH-/ 1 mol Ba(OH)2 ) = 0.0109 mol OH-

0.0109 mol OH-x (1mol HCl/ 1 mol OH- ) = 0.0109 mol HCl

0.109 mol HCl/(0.130 mol/L HCl) = 0.0839 L HCl

0.0839 L HCl * 1000mL = 83.9 mL of 0.130 M HCl

3 0

3 years ago

What type of claim must be supported by scientifically valid evidence for it to be approved for use on a food label? A. Health c

Lelu [443]

Option A. Health claim

Health claim must be supported by scientifically valid evidence to be approved in using for food label.

This is also a food guide to all consumers the food content implied by manufacturers to their products.

8 0

3 years ago

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How many milliners of hydrogen gas ar produced by the reaction 0.020 moles of magnesium with excess of hydrochloride acid at sto

jeyben [28]

Answer:- 448 mL of hydrogen gas are formed.

Solution:- It asks to calculate the volume of hydrogen gas formed in milliliters at STP when 0.020 moles of magnesium reacts with excess HCl acid. The balanced equation is:

$Mg+2HCl\rightarrow MgCl_2+H_2(g)$

There is 1:1 mol ratio between Mg and hydrogen gas. So, the moles of hydrogen gas is also equals to the moles of Mg reacted.

moles of Hydrogen gas formed = 0.020 mol

At STP, volume of 1 mol of the gas is 22.4 L. We need to calculate the volume of 0.02 moles of hydrogen gas.

$0.02mol(\frac{22.4L}{1mol})$

= 0.448 L

They want answer in mL. So, let's convert L to mL using the conversion formula, 1L = 1000mL

$0.448L(\frac{1000mL}{1L})$

= 448 mL

So, 0.020 moles of magnesium would produce 448 mL of hydrogen gas at STP on reacting with excess of HCl acid.

5 0

3 years ago