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3 years ago

What are living things

2 answers:

7 0

Living things have cells like for example plants are alive because they have cells and have cells like rocks dont have cells.

Katarina [22]3 years ago

6 0

Living things are all objects that have self-sustaining processes (biology) Organisms, contiguous living systems (such as animals, plants, fungi, or micro-organisms).

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What is the concentration of a solution with a volume of 2.5 liters containing 600 grams of calcium phosphate?

trapecia [35]

Answer:

1.12M

Explanation:

Given parameters:

Volume of solution = 2.5L

Mass of Calcium phosphate = 600g

Unknown:

Concentration = ?

Solution:

Concentration is the number of moles of solute in a particular solution.

Now, we find the number of moles of the calcium phosphate from the given mass;

Formula of calcium phosphate = Ca₃PO₄

molar mass = 3(40) + 31 + 4(16) = 215g/mol

Number of moles of Ca₃PO₄ = $\frac{600}{215}$ = 2.79moles

Now;

Concentration = $\frac{Number of moles }{volume }$

Concentration = $\frac{2.79}{2.5}$ = 1.12M

7 0

3 years ago

What is the balanced equation for the single replacement reaction between potassium and copper (2) chloride

frutty [35]

Answer: K + CuCl2 -> KCl2 + Cu

4 0

4 years ago

Compounds with which type of bond have the potential to dissociate (break

zhenek [66]

Answer:

B i'm pretty sure, correct me if i'm wrong.

Explanation:

7 0

3 years ago

A substance that can accept a pair of electrons to form a covalent bond is known as a lewis ____.

lesantik [10]

C. acid
have a nice day

8 0

3 years ago

Automobile airbags inflate due to the formation of nitrogen gas from the chemical reaction 2NaN3(s)⟶3N2(g)+2Na(s) Identify the n

Vera_Pavlovna [14]

First part:

2 atoms of Na

6 atoms of N

Second part:

2 atoms of N

2 atoms of Na

Why?

We are given the chemical reaction, so, we can extract the number of atoms for both reactants and products.

We are given the chemical equation:

$2NaN_{3}=3N_{2}+2Na$

We can rewrite it as follow:

$2(NaN_{3})=3N_{2}+2Na$

From the reactants, we have:

$2(NaN_{3})$

$2Na=2atoms\\2N_{3}=2*3=6atoms$

From the products we have:

$3N_{2}+2Na$

$3N_{2}=3*2=6atoms$

$2Na=2atoms$

Hence, we have that:

There are 6 atoms of N in the reactants and 6 atoms of N in the products.

and

There are 2 atoms of Na in the reactants and 2 atoms of Na in the products since we have a balanced equation.

Have a nice day!

6 0

3 years ago