Why are meerkats considered to be part of an ecosystem

Chemistry

1 answer:

ladessa [460]3 years ago

5 0

They are living organisms in the ecosystem and make up part of the food chain.<span />

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True or false: Atoms and mass are conserved in nature<br> True<br> False

katovenus [111]

Answer:

It’s true

Explanation:

If we account for all reactants and products in a chemical reaction, the total mass will be the same at any point in time in any closed system. ... The Law of Conservation of Mass holds true because naturally occurring elements are very stable at the conditions found on the surface of the Earth.

5 0

3 years ago

3. In an experiment it was found that 40.0cm of 0.2M sodium hydroxide solution just neutralized 0.2g

hjlf

The relative molecular mass of acid A : 50 g/mol

<h3>Further explanation</h3>

Given

40.0 cm³(40 ml) of 0.2M sodium hydroxide

0.2g of a dibasic acid

Required

the relative molecular mass of acid A

Solution

Titration formula

M₁V₁n₁=M₂V₂n₂

n=acid/base valence(number of H⁺/OH⁻)

NaOH ⇒ n = 1

Dibasic acid = diprotic acid (such as H₂SO₄)⇒ n = 2

mol = M x V

Input the value in the formula :(1 = NaOH, 2=dibasic acid)

0.2 x 40 x 1 = M₂ x V₂ x 2

M₂ x V₂ = 4 mlmol = 4.10⁻³ mol ⇒ mol of Acid A

The relative molecular mass of acid A (M) :

$\tt M_A=\dfrac{mass }{mol}=\dfrac{0.2~g}{4.10^{-3}}=50~g/mol$

5 0

3 years ago

A tube of air contains a feather and a coin. both objects are dropped at the same time. the coin falls faster than the feather.

Mazyrski [523]

Because gravity treats all mass equally. It doesn't treat heavier objects with greater force. All objects experience the gravitational pull equally. Making the two different weights reach the ground together simultaneously despite their weight differences.

6 0

4 years ago

What the oxidation state of sulfur in sulfite?

RUDIKE [14]

Answer:

Explanation:

$SO^{-2} _{3}$ , Oxygen always works with -2. You multiply with the number of atoms -2*3= -6