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3 years ago

Which of these is an example of pseudoscience?

Chemistry

2 answers:

lesya [120]3 years ago

8 0

Answer: D) predicting future events in a person's life based on the position of the moon

Explanation: a collection of beliefs or practices mistakenly regarded as being based on scientific method.

lianna [129]3 years ago

6 0

I believe the answer is D, but not 100%

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Write the neutralization equation that would take place in the stomach with two different bases used in antacid products

Aleksandr [31]

In order for the human being stomach to digest food, it uses hydrochloric acid (HCl). This is a very effective an dstrong acid that can burn the lining of the stomach and even cause ulcer if this lining does not contain enough mucus.

Back on track, a reaction between an acid and a base usually yields a salt and water. The two bases that we will use in the reaction with HCl are Mg(OH)2 and CaCO3 (note that (OH)- and (CO3)- both define basis)
MAKE SURE TO BALANCE YOU EQUATION, WHERE THE NUMBER OF MOLECULES ENTERING SHOULD BE EQUAL TO THE NUMBER OF MOLECULES RESULTING.

Equation #1:
2HCl + Mg(OH)2 --> 2H2O + MgCl2
MgCl2 is the salt
Equation#2:
2HCl + CaCO3 --> H2O + CO2 + CaCl2
CaCl2 is the salt
Carbon dioxide is formed as a result of the additional carbon carbon, the reaction ideally outputs H2CO3 which is a very weak base the breaks into water and CO2

5 0

3 years ago

How many moles of O2 are required to react with 6.6 moles of H2?

Bingel [31]

Answer:

For 1: 3.3 moles of oxygen gas is required.

For 2: 14 moles of hydrogen gas is required.

For 3: 1.5 moles of oxygen gas is required.

Explanation:

The chemical reaction of oxygen and hydrogen to form water follows:

$O_2+2H_2\rightarrow 2H_2O$

For 1: When 6.6 moles of $H_2$ is reacted.

By Stoichiometry of the above reaction:

2 moles of hydrogen gas reacts with 1 mole of oxygen gas.

So, 6.6 moles of hydrogen gas will react with = $\frac{1}{2}\times 6.6=3.3mol$ of oxygen gas.

Hence, 3.3 moles of oxygen gas is required.

For 2: When 7.0 moles of $O_2$ is reacted.

By Stoichiometry of the above reaction:

1 mole of oxygen gas reacts with 2 moles of hydrogen gas.

So, 7 moles of oxygen gas will react with = $\frac{2}{1}\times 7=14mol$ of hydrogen gas.

Hence, 14 moles of hydrogen gas is required.

For 3: When 3.0 moles of $H_2O$ is formed.

By Stoichiometry of the above reaction:

2 moles of water is formed from 1 mole of oxygen gas.

So, 3.0 moles of water will be formed from = $\frac{1}{2}\times 3.0=1.5mol$ of oxygen gas.

Hence, 1.5 moles of oxygen gas is required.

7 0

3 years ago

How do we know that caramelizing sugar is a chemical change

zavuch27 [327]

The browning reaction causes it to change color.

4 0

3 years ago

Read 2 more answers

How many total atoms are in one molecule of Pb(C2H2O2)2? A) 9 B) 14 C) 3 D) 15

Serjik [45]

, shows that its molecules contain one S atom and two O atoms; calculate its molar mass. molecules, which consist of 6.02 x 1023 S atoms and 2(6.02 x 1023) O atoms.
The answer is C,(3)

8 0

2 years ago

_KOH+_H3PO4=_K3PO4+_H2O

Evgen [1.6K]

$▪▪▪▪▪▪▪▪▪▪▪▪▪ {\huge\mathfrak{Answer}}▪▪▪▪▪▪▪▪▪▪▪▪▪▪$

The balanced chemical equation for given reaction is ~

$\sf{3KOH + H_3PO_4 \rightarrow K_3PO_4 + 3H_2O}$

4 0

2 years ago