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Black_prince [1.1K]

4 years ago

13

What do you think is meant by the term pseudoscience?

2 answers:

LenKa [72]4 years ago

8 0

Explanation:

it means false science

WITCHER [35]4 years ago

5 0

Answer:

The term "pseudo-science" assumes a criterion that allows a differentiation between science and nonscience, good science and bad science, true and false. ... They must try to understand them and not put out in television programmes the sort of pseudo-science that does not exist in reality

Explanation:

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a material has a density of 8.9 g/cm^3. you have three cubic centimeters of the substance. what is the material's mass in grams?

Paha777 [63]

Answer:

26,7 g

Explanation:

$8,9[\frac{g}{cm^3}]*3[cm^3]=26,7[g]$

As you see in the maths, if you have 8,9 grams per each cubic centimeter, in 3 cubic centimeter you'll have 3 times 8,9

5 0

4 years ago

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What are the four states of matter?

Kipish [7]

Solid, Liquid, Gas, and Plasma

4 0

4 years ago

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Ammonium perchlorate (NH,CIO) is the solid rocket fuel used by the U.S. Space Shuttle. It reacts with itself to produce nitrogen

meriva

<u>Answer:</u> The mass of oxygen gas produced is 2.4 grams

<u>Explanation:</u>

To calculate the number of moles, we use the equation:

$\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}$ .....(1)

Given mass of ammonium perchlorate = 8.84 g

Molar mass of ammonium perchlorate = 117.5 g/mol

Putting values in equation 1, we get:

$\text{Moles of ammonium perchlorate}=\frac{8.84g}{117.5g/mol}=0.0752mol$

The chemical equation for the decomposition of ammonium perchlorate follows:

$2NH_4ClO_4\rightarrow N_2+Cl_2+2O_2+4H_2O$

By Stoichiometry of the reaction:

2 moles of ammonium perchlorate produces 2 moles of oxygen gas.

So, 0.0752 moles of ammonium perchlorate will produce = $\frac{2}{2}\times 0.0752=0.0752mol$ of oxygen gas

Now, calculating the mass of oxygen gas from equation 1, we get:

Molar mass of oxygen gas = 32 g/mol

Moles of oxygen gas = 0.0752 moles

Putting values in equation 1, we get:

$0.0752mol=\frac{\text{Mass of oxygen gas}}{32g/mol}\\\\\text{Mass of oxygen gas}=(0.0752mol\times 32g/mol)=2.4g$

Hence, the mass of oxygen gas produced is 2.4 grams

7 0

3 years ago

To the diagram, what rock groups can form metamorphic rock?

Advocard [28]

Answer: C is the correct answer

Explanation:

7 0

3 years ago

Can you dissolve. 35 moles of potassium permanganate (kmno4) into 500 ml of water? _________ why? / why not?

Greeley [361]

Yes, we can dissolve 35 moles of KMnO₄ into 500 mL of water to give a molarity of 70 M

<h3>What is molarity? </h3>

Molarity is defined as the mole of solute per unit litre of solution. Mathematically, it can be expressed as:

Molarity = mole / Volume

<h3>How to determine the molarity </h3>

Mole of KMnO₄ = 35 moles
Volume = 500 mL = 500 / 1000 = 0.5 L

Molarity =?

Molarity = mole / Volume

Molarity = 35 / 0.5

Molarity = 70 M

Learn more about molarity:

brainly.com/question/9468209

3 0

2 years ago

Read 2 more answers