All categories

3 years ago

23

Chemistry

2 answers:

grigory [225]3 years ago

7 0

Answer:

The anser is C

Explanation:

This is because the fungi and bacteria are the decomposer, and their job is to decompose dead organism.

zaharov [31]3 years ago

7 0

Answer:

fungi and bacteria in the soil

You might be interested in

True or false: The Earth's rotation causes the winds to curve.

Rashid [163]

Answer:

true

Explanation:

3 0

3 years ago

What are lone pairs of electrons?

ozzi

A lone pair is a pair of valence electrons that are not shared with another atom and is sometimes called a non-bonding pair.

5 0

3 years ago

Sodium hydroxide is extremely soluble in water. At a certain temperature, a saturated solution contains 527 g NaOH(s) per liter

Alona [7]

<u>Answer:</u> The molarity of solution is 13.175 M.

<u>Explanation:</u>

To calculate the molarity of solution, we use the equation:

$\text{Molarity of the solution}=\frac{\text{Mass of solute}}{\text{Molar mass of solute}\times \text{Volume of solution (in L)}}$

We are given:

Mass of solute (sodium hydroxide) = 527 g

Molar mass of sodium hydroxide = 40 g/mol

Volume of solution = 1 L

Putting values in above equation, we get:

$\text{Molarity of solution}=\frac{527g}{40g/mol\times 1L}\\\\\text{Molarity of solution}=13.175M$

Hence, the molarity of solution is 13.175 M.

4 0

3 years ago

Compare the potential energy of a 5 lb ball at the top of a 5 foot hill and a 5 lb ball at the top of a 10 foot hill. Question 4

Elodia [21]

I'll firstly separate the options for the answer so the question is more clear:

a) Their potential energies are the same because they have the same mass.
b) Potential energy doesn't depend on an object's relative height.
c) The ball at the top of the 5 foot hill has more potential energy.
d) The ball at the top of the 5 foot hill has less potential energy.

If we look at the equation for gravitational potential energy:

GPE = mgh

GPE = gravitational potential energy
m = mass of the object
g = gravitational constant
h = height of the object

We can see that GPE and height have a direct linear relationship. Therefore, as the height increases, the potential energy increases. This relationship suggests that since the mass is equal, the ball at the top of the 10 ft hill will have more potential energy than the ball at the top of the 5 ft hill.

The answer we are looking for is d) The ball at the top of the 5 foot hill has less potential energy.

6 0

3 years ago

The lead-acid storage battery is the oldest rechargeable battery in existence. It was invented in 1859 by French physician Gasto

Vera_Pavlovna [14]

Answer:

Enthalpy of formation to the nearest KJ = -275KJ

Explanation:

Enthalpy of formation is the heat change when one mole of a substance is formed from its element in its standard states and in standard conditions of temperature and pressure. it may be positive or negative, if positive, it is an endothermic reaction where the heat content of the product is greater than that of the reactants. and if negative, it is exothermic reaction - where the heat content of the reactants is greater than the products. the enthalpy of formation is measured in Kilo-Joule/Moles (KJ/Mole).

A detailed step by step calculation of the enthalpy of formation of one mole lead (II) sulfate of is attached below.

7 0

3 years ago