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2 years ago

HELP HELP HELP

Chemistry

2 answers:

PilotLPTM [1.2K]2 years ago

6 0

I believe it is D my good friend.

Delicious77 [7]2 years ago

4 0

the correct answer is: A, the core is the densest layer

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The law of conservation of mass says that *

BabaBlast [244]

The answers would be the mass before a reaction is the same as the mass after a reaction which basically means mass is conserved

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2 years ago

Chem Equations Balance and Classify each of the following equations into: Combination reaction, Decomposition Reacti

Arlecino [84]

Answer :

(A) The balanced chemical reaction will be:

$2KBr(aq)+Cl_2(g)\rightarrow 2KCl(aq)+Br_2(l)$

This reaction is a single replacement reaction.

(B) The balanced chemical reaction will be:

This reaction is a double displacement reaction.

(C) The balanced chemical reaction will be:

$N_2(g)+3H_2(g)\rightarrow 2NH_3(g)$

This reaction is a combination reaction.

Explanation :

Balanced chemical reaction : It is defined as the reaction in which the number of atoms of an element present on reactant side must be equal to the product side.

Part (A):

The balanced chemical reaction will be:

$2KBr(aq)+Cl_2(g)\rightarrow 2KCl(aq)+Br_2(l)$

This reaction is a single replacement reaction in which the most reactive element displaces the least reactive element from its solution.

Part (B):

The balanced chemical reaction will be:

$CaBr_2(aq)
+H_2SO_4(aq)\rightarrow CaSO_4(s)+2HBr(g)$

This reaction is a double displacement reaction in which a positive cation and a negative anion of two reactants exchange their places to form two new products.

Part (C):

The balanced chemical reaction will be:

$N_2(g)+3H_2(g)\rightarrow 2NH_3(g)$

This reaction is a combination reaction in which the two atoms combine to form a larger molecule.

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2 years ago

What is the compounds of AICI3 and H+

Kobotan [32]

Answer:

Aluminium Chloride and Hyrdron, also known as proton/

Explanation:

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3 years ago

Explain why most cells must be microscopic (so small they must be viewed with a microscope) in order to maintain life properly.

Y_Kistochka [10]

Answer:

if the cell grows beyond a certain limit, not enough material will be able to cross the membrane fast enough to sustain the increased cellular volume

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2 years ago

Read 2 more answers

What is the ph of a solution that is .75 m in sodium acetate and .50 m in acetic acid? (ka for acetic acid is 1.8*10^-5?

inna [77]

Answer:

4.921.

Explanation:

It is an acidic buffer solution;

∵ pH = pKa + log[salt]/[acid].

∴ pH = - log(1,8 x 10⁻⁵) + log[0.75/0.50] = 4.745 + 0.1761 = 4.921.

8 0

3 years ago