All categories

3 years ago

Use the drop-down menus to complete each sentence.

Chemistry

1 answer:

Tom [10]3 years ago

3 0

Answer:

A consumer is an organism that eats other organisms to gain energy; it is also called a heterotroph.

A producer is an organism that makes its own food; it is also called an autotroph.

A decomposer is an organism that breaks down waste and dead organisms.

Explanation:

Green plants are examples of autotrophs that make their own food by photosynthesis - they don't rely on other organisms to provide them with energy.

In contrast, many organisms rely on other organisms as an energy source. These organisms are called consumers or heterotrophs. They consume producers and other consumers.

Decomposers such as some fungi, bacteria, and certain insects break down dead or decaying biological material and recycle the nutrients back into the soil.

You might be interested in

How do you balance chemical equations

Zielflug [23.3K]

4Al + 3 $O_{2}$ --> 2 $Al_{2} O_{3}$

8 0

4 years ago

Why is water clarity an important measure of water quality?

Neko [114]

Water clarity is important in water habitats. The amount of sunlight that reaches underwater plants depends on water clarity. The plants will die if they cannot get enough sunlight, and we need the water to be clean and clear so the sunlight reaches the plants. Hope that helps :)

8 0

4 years ago

3.364 g of hydrated barium chloride of BaCL2.xH2O was dissolved in water and made up to a total volume of 250.0 mL. 10.00 mL of

atroni [7]

<u>Given:</u>

Mass of hydrated barium chloride = 3.364 g

Total volume of barium chloride V(total)= 250 ml

Volume taken for titration V = 10 ml

Volume of AgNO3 consumed = 46.92 ml

Concentration of AgNO3 = 0.0253 M

<u>To determine:</u>

The value of x i.e. the water of hydration in BaCl2

<u>Explanation:</u>

The net ionic equation is-

Ag⁺(aq) + Cl⁻(aq) → AgCl(s)

Based on the reaction stoichiometry: Equal moles of Ag+ and Cl- combine to form AgCl

Moles of Ag+ consumed = moles of Cl- present

Moles of Ag+ = V(AgNO3) * M(AgNO3) = 0.04692 * 0.0253 = 0.00119moles

Moles of Cl- present = 0.00119 moles

Thus, 0.00119 moles of Cl- are present in 10 ml of the solution

Therefore, number of moles of Cl- in 250 ml would be-

= 0.00119 * 250 /10 = 0.02975 moles of cl-

Now:

2 moles of Cl- are present in 1 mole of BaCl2

Therefore, 0.02975 moles of Cl- correspond to- 0.02975 * 1/2 = 0.01488 moles of BaCl2

Molar mass of BaCl2 = 208.22 g/mol

Thus, mass of BaCl2 = 0.01488 moles * 208.22 g.mol-1 = 3.098 g

Mass of water of hydration = 3.364 - 3.098 = 0.266 g

# moles of water 'x' = .266/18 = 0.015 ≅ 1

Ans: Formula for hydrated barium chloride = BaCl2. 1H2O

7 0

4 years ago

If the resistance of a circuit is 3 ohms, and the voltage produced by the cell in the circuit is 12 volts, what's the magnitude

koban [17]

Answer:

Explanation:

The magnitude of the current can be found by using the formula

$i = \frac{v}{r} \\$

v is the voltage

r is the resistance

From the question we have

$i = \frac{12}{3} = 4 \\$

We have the final answer as

Hope this helps you

7 0

3 years ago

Read 2 more answers

Write the balanced equation for the reaction of dilute sulfuric acid. H2so4 , with sodium hydroxide

Aleksandr [31]

Answer:

H2SO4 + 2NaOH → Na2SO4 + 2H2O

Explanation:

This question is describing the neutralization reaction between dilute sulfuric acid (H2SO4) and sodium hydroxide (NaOH). These two compounds combine to form sodium salt and water as products (see the chemical equation below).

H2SO4 + NaOH → Na2SO4 + H2O

However, this equation is not BALANCED because the number of atoms of each element are not the same on both sides of the equation. To balance the equation, COEFFICIENTS are used as follows:

H2SO4 + 2NaOH → Na2SO4 + 2H2O

From this equation, the atoms of hydrogen (H), sulphur (S), oxygen (O), sodium (Na) are now equal on both sides, hence, it is said to be BALANCED.

3 0

3 years ago