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3 years ago

Ii. What is the purpose of the scientific method? (2 points)

Chemistry

2 answers:

Katena32 [7]3 years ago

6 0

Explanation:

What is the purpose of the scientific method?

ans/

the goal of any scientific method is to solve a problem or to better understand an observed event.

i. What does the law of conservation of energy say?

ans/

The law of conservation of energy states that energy can neither be created nor destroyed - only converted from one form of energy to another.

ii. List two different kinds of energy.

ans/

Potential energy.

Kinetic energy.

iii. What does the law say about changes energy can undergo?

ans/

The implication of the Law of Conservation of Energy is that for any energy conversion, if a certain type, or form, of energy gets reduced by a certain amount, then another type of energy must increase by the same amount.

harina [27]3 years ago

6 0

Answer:

ii. Purpose of scientific method

=The Scientific Method helps you put together experiments, use data to find conclusions and interpret them. In short, the Scientific Method is a step-by-step process: First, observe. Use your senses and take notes about the situation

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Is the dissolving process for most salts endothermic or exothermic?

natali 33 [55]

It is an endothermic process

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3 years ago

20 ml of a 1.0 m hcl solution are added to 3.0 l of acid solution with a ph of 5.35. the ph of the mixture rises to 5.33 was the

SashulF [63]

You may suppose you have a 0.1 M solution of NH3, from:

NH4Cl + NaOH > NH3 + H2O.

Then you can compute the pH from the concentration of NH3 and its pKb.

The concentration is high enough to use the simplified formula:

[OH] = sqr(Kb*conc)

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3 years ago

The method used by Joseph Priestley to obtain oxygen made use of the thermal decomposition of mercuric oxide given below. What v

sukhopar [10]

Answer:

The volume of the oxygen gas is 0.246 L

Explanation:

Step 1: Data given

Temperature = 39 °C = 312 K

Temperature = 725 torr = 725 / 760 atm = 0.953947 atm

Mass of mercuric oxide = 3.97 grams

Molar mass of mercuric oxide = 216.59 g/mol

Step 2: The balanced equation

2HgO → 2Hg + O2

Step 3: Calculate moles mercuric oxide

Moles = mass / molar mass

Moles HgO = 3.97 grams / 216.59 g/mol

Moles HgO = 0.0183 moles

Step 3: Calculate moles oxyen

For 2 moles HgO we'll have 2 moles Hg and 1 mol O2

For 0.0183 moles HgO we'll have 0.0183/2 = 0.00915 moles O2

Step 4: Calculate volume O2

p*V = n*R*T

⇒with p = the pressure of the gas = 0.953947 atm

⇒with V = the volume of O2 gas = TO BE DETERMINED

⇒with n = the moles of O2 = 0.00915 moles

⇒with R = the gas constant = 0.08206 L*atm/mol*K

⇒with T = the temperature = 312 K

V = (n*R*T)/p

V = (0.00915 moles * 0.08206 L*atm/mol*K * 312 K ) / 0.953947 atm

V = 0.246 L

The volume of the oxygen gas is 0.246 L

3 0

3 years ago

1. Which statement is accurate?

valkas [14]

1. Answer:

B) An allele is one form of a gene.

Explanation:

An allele refers to an alternative form of a gene. In other words it is one of the form of a gene.
A gene may have two alleles, where one of the allele is a dominant allele and the other is a recessive allele.
A homozygous organisms may be dominant or recessive, a homozygous recessive contains two recessive alleles while a homozygous dominant contains two dominant alleles.
A heterozygous organisms contain one dominant allele and one recessive allele.

2. Answer;

B) Alleles

Explanation;

According to Mendel genes are inherited in pairs of alleles that behave in a dominant and recessive pattern.
Alleles are alternative forms of a gene.

A gene may have two alleles, where one of the allele is a dominant allele and the other is a recessive allele.
A homozygous organisms may be dominant or recessive, a homozygous recessive contains two recessive alleles while a homozygous dominant contains two dominant alleles.

8 0

3 years ago

Please answer fast if can, will give Brainiest

Vilka [71]

From the absorption spectra of a gas, we can see the amount of thermal energy the gas contains (option D).

<h3>What is the absorption spectra?</h3>

The absorption spectra shows us the energy that is taken in by a gas. We know that when a gas is heated, it absorbs energy which shows up in its absorption spectra.

Thus, from the absorption spectra of a gas, we can see the amount of thermal energy the gas contains.

Learn more about absorption spectra:brainly.com/question/4239971

#SPJ1

7 0

2 years ago