Chemistry College

What is the purpose of the scientific method?

A. To use an experiment to test a scientific theory

B. To make a guess in order to prove a hypothesis

C. To remove any source of bias in an experiment

D. To provide a reliable answer to a specific question

Answers

Answer 1

Answer:

B. To make a guess in order to prove a hypothesis.

Explanation:

Answer 2
D. To provide a reliable answer to a specific question

Related Questions

At room temperature, oxygen is a gas and hydrogen is a gas. When they combine at room temperature, they form a _______________.

Answers

Answer: they can combine to form water or hydrogen peroxide.

Explanation:

sorry if it wrong i just looked it up lol. hope this helps tho

PLEASE HELP ME! I beg you :(

Answers

The answer is the second one from what i remember

Cell Walls are found in Prokaryotes and Plant cells. True O False​

Answers

Answer:

i think true

Explanation:

lemme know if right if not sorry :))

The answer is true. Cell walls are found in both. :)

I guess this is free:)))): ((((

Answers

Answer:

tysm!!!! :D <<<33333

Explanation:


How many moles of hydrogen are in a 200. mg tablet of naproxen sodium, C14H13NaO3, the active ingredient in Aleve? Please show your work to receive full credit. MM = 252

Answers

Answer:

0.0103 mol

Explanation:

Step 1: Given data

Mass of the naproxen sodium tablet (m): 200. mgMolar mass of naproxen sodium (M): 252 g/mol

Step 2: Convert "m" to grams

We will use the conversion factor 1 g = 1000 mg.

200. mg × 1 g/1000 mg = 0.200 g

Step 3: Calculate the moles (n) of naproxen sodium

We will use the following expression.

n = m/M = 0.200 g / (252 g/mol) = 7.94 × 10⁻⁴ mol

Step 4: Calculate the moles of hydrogen in 7.94 × 10⁻⁴ moles of naproxen sodium

According to the chemical formula, the molar ratio of naproxen sodium to H is 1:13. The moles of H are 13/1 × 7.94 × 10⁻⁴ mol = 0.0103 mol.

Which element, when combined with fluorine, would most likely form an
ionic compound?

A. phosphorus
B. lithium
C. carbon
D. chlorine

Answers

The answer is: B. Lithium

You have 0.531 L of gas in a container. What is the volume in mL?

Answers

Answer:

531 mL is the volume in mL

         

Answer:

Hi there!

I hope you are having an outstanding day.

I believe the answer to your question is 531!

Please adress me if I am incorrect. :)

Much love,

     Pandora

Explanation:

Which statement below best describes a volatile liquid?

Question 17 options:

1.A liquid that doesn't evaporate under atmospheric pressure


2.A liquid that evaporates slowly at low temperatures


3.A liquid that evaporates rapidly at low temperatures


4.A liquid that requires a large amount of energy to evaporate

Answers

Answer:

A liquid that evaporates rapidly at low temperatures

Explanation:

Answer:

A liquid that evaporates rapidly at low temperatures.

Explanation:

A volatile liquid such as gasoline evaporates easily. Its chemicals aren't held together as strongly, and room temperature is often enough to break intermolecular bonds and evaporate them. 

PF

Question 1 (4 points)
What is the molecular weight of Magnesium nitride, Mg3N2 (OR Mg3 N2). Report
your answer to two decimal places.
Do not include units with your answer.
The atomic weight of Mg is 24.31 grams/mole
The atomic weight of N is 14.01 grams/mole

Answers

To be honest answer might be a

A student plans a two-step synthesis of 1-ethyl-3-nitrobenzene from benzene. The first step is nitration of benzene to give nitrobenzene, and the second step is a Friedel-Crafts alkylation using CH3CH2Cl and AlCl3. The plan is flawed because: A : When the alkyl halide interacts with AlCl3, the resulting carbocation can rearrange before it has a chance to react with the aromatic ring. B : Nitrobenzene is too deactivated (by the nitro group) to undergo a Friedel-Crafts alkylation. C : The nitro group will direct the incoming alkyl group para position, rather than to the meta position. D : A blocking group is required to achieve this synthesis.

Answers

Answer:

Nitrobenzene is too deactivated (by the nitro group) to undergo a Friedel-Crafts alkylation.

Explanation:

The benzene ring in itself does not easily undergo electrophilic substitution reaction. Some groups activate or deactivate the benzene ring towards electrophilic substitution reactions.

-NO2 ia a highly deactivating substituent therefore, Friedel-Crafts alkylation of nitrobenzene does not take place under any conditions.

This reaction scheme is therefore flawed because Nitrobenzene is too deactivated (by the nitro group) to undergo a Friedel-Crafts alkylation.

______ occur between molecules that have permanent intramolecular differences in elecronegativity.
A. Dipole-dipole interactions
B. Dispersion forces
C. Hydrogen bonds​

Answers

The answer is dipole dipole interactions

Answer:

Dipole-dipole interactions

Explanation:

PLEASE HELP ITS RLLY IMPORTANT.

Consider the model of Ammonia to the right. Which terms would be used to describe this model? Element, molecule, and/or compound? Explain your reasoning.

Answers

Ammonia is a chemical compound because it composed of one nitrogen atom and three hydrogen atoms,

please help me
is for my daughter ​

Answers

Answer:

I think you have to freeze the water itself then take the temp with a thermometer ️of each one then record how long it takes each one to start freezing then how long it takes for it to melt

Explanation:

sorry if I'm wrong but you have to do the experiment yourself then fill it out

Which of these elements has the lowest ionization energy?
A. Si
B. CI
C. S
D. Na

Answers

Answer:

D . Na

Explanation:

Which materials allow electrons to flow through them?
A. Insulators only
B. Semiconductors and conductors
C. Conductors only
D. Semiconductors and insulators

Answers

The materials which allow electrons to flow through them are Semiconductors and conductors. Hence Option (B) is correct.

What are conductors ?

A conductor, or electrical conductor, is a substance or material that allows electricity to flow through it.

In a conductor, electrical charge carriers, usually electrons or ions, move easily from atom to atom when voltage is applied.

Therefore, The materials which allow electrons to flow through them are Semiconductors and conductors. Hence Option (B) is correct.

Learn more about Conductor here ;

https://brainly.com/question/8426444

#SPJ5

Answer:semiconductors and conductors

Explanation:

2. What is one effect of convection currents in the mantle?
A. forming deep-water currents in oceans B. cooling the rocks of the crust
C. providing energy to drive the water cycle
D. transferring heat from Earth's interior to the crust​

Answers

Answer:

D no. is the answer of your question

What is the formula of A^4 +b^4​

Answers

Answer:

A^4 +b^4

(a²)²+(b²)²

(a²+b²)²-2a²b²

or

(a²-b²)²+2a²b²

thermal energy is what we call energy that come from ___ of matter

Answers

Temperature is your answer hopefully

What is the mole ratio of iron (III) chloride (FeCl3) to zinc chloride (ZnCl2) ?
2 FeCl3 + 3 Zn → 2 Fe + 3 ZnCl2


a.2:2
b.2:3
c.3:3
d.3:2

Answers

Answer:C

Explanation:

To make some oatmeal, Sally combined 40 grams of oatmeal, 10 grams of maple syrup, and some warm water. If the combined mass was 100 grams, how much water did she add?

ANSWER THIS EMEDIATLY PLEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEAAAAAAAAAASE

thank you
















(ps.this is the closest subject to science (that deals with volume, mass, and matter you know that kind of stuff )that I could find

Answers

100-40-10= 50 grams of water

What unit of time is based on the revolution of Earth around the sun?
A. month
B. year
C. day
D. hour​

Answers

Years . The earth revolving around the sun takes 365 days which equals a year

The equivalence point in a titration refers to the point when

A. the mł of the acid equals the mL of the base.

B. the molarity of the acid used in the reaction equals the molarity of the base used in the reaction.

C. the number of moles of one reactant reacts completely with the moles of the other reactant.

D. the acid in the flask turns clear.

Answers

Answer:

C) the number of moles of one reactant reacts completely with the moles of the other reactant.

Explanation:

it's right put it

Answer:

C

Explanation:

when comparing ethanol and acetic acid, which one has the most polar bond? and what is that bond?​

Answers

Answer:

Ethanol is another alcohol, and since there are less carbons in its chain, it will be more polar. So Ethanol is the most polar bond, it has two different types of bonding between its constituent atoms. The bonds between the hydrogen and carbon atoms are nonpolar covalent bonds. The hydrogen-oxygen and carbon-oxygen bonds are polar covalent bonds.

Explanation:

Can someone please help me on this?

Answers

Answer:

a liquid

Explanation:

I'm not for sure but I just looked it up

yes a liquid. i looked it up as well

How much does the Earth weigh?​

Answers

5.972 × 10^24 kg

hope it helps

Answer:

5.972 × 10^24 kg

hope this helps

Which resulted from the study of chemistry?

Answers

Answer:

I'm confused I think you're suppose to put a picture if you want someone to answer your question just saying.

Explanation:

Answer:

The understanding of the earth, air, fire, and water as the basic components of matter.

Explanation:

what is the structure of methane​

Answers

Answer:

CH4

Explanation:

if it is wrong, i blame my brain

Use the balanced equation in the image below. How many moles of
ammonia (NH3) will be produced if 2.22 moles of nitrogen (N2) are used?
(Assume there is excess hydrogen gas.) SHOW YOUR WORK TO RECEIVE
CREDIT. *
N2 + 3H2 → 2 NH3

Answers

Since there is excess hydrogen, that means that the concentration of hydrogen is not limiting.

According to the balanced chemical equation:

every mole of N2 and every 3 moles of H2 we obtain 2 moles of NH3. Since we have the amount of N2 and excess of hydrogen, we only need to work with the amount of N2.

1 mol of N2 will produce 2 moles of NH3

so now we can get a conversation tool :

moles of N2 * (2 moles of NH3/ 1 mole of N2) = moles of NH3

(2.22 mol of N2 x 2) ÷ 1 = 4.44 mol of NH3

How many grams of water can be made from 6 moles of oxygen

Answers


12 moles H2O

Explanation:
Your tools of choice for stoichiometry problems will always be the mole ratios that exist between the chemical species that take part in the reaction.
As you know, the stoichiometric coefficients attributed to each compound in the balanced chemical equation can be thought of as moles of reactants needed or moles of products formed in the reaction.

Five different substances added breakers of water. Each substance begins as a white, solid powder. Which substances do not dissolve in water? Salt,sugar,starch,chalk, and bakeing powder

Answers

Answer:

Chalk is does not dissolve in water

Explanation:

i had the same question as you

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