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Degger [83]
3 years ago
10

Pls help ASSSAPPPP!!!!

Chemistry
2 answers:
Phoenix [80]3 years ago
4 0

Answer:

The answer is B (it's reactivity)

agasfer [191]3 years ago
3 0

Answer:

b or d

Explanation:

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Genetic mutations are
charle [14.2K]
C. Sometimes
they can have various benefits but some genetic mutations can cause disadvantages
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2 years ago
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Solution A has a mass of 70 g. Solution B has a mass of 35 g. When they are mixed, a chemical reaction occurs in which a gas is
Nuetrik [128]

 Mass of gas produced : 15 g

<h3>Further explanation </h3>

In general, the reaction takes place in the open air. If the reaction results in the form of gas as in combustion, the mass of the reaction results will be smaller than the original mass.  

Conservation of mass applies to a closed system, where the masses before and after the reaction are the same

So In a closed/isolated system, the total mass of the substance before the reaction will be equal to the total mass of the reaction product.

  • Mass of reactants :

Mass of solution A  = 70 g

Mass of solution B = 35 g

  • Mass of products :

Mass of mixture : 90 g

Mass of gas : X

Mass of gas X :

\tt mass~reactants(mass~A+mass~B)-mass~products(mass~mixture+mass~gas)\\\\mass~gas=(70+35)-90\\\\mass~gas=15~g

6 0
3 years ago
Polypeptides and proteins must fold properly to be functional. Hydrogen bonds between the oxygen and nitrogen atoms of the pepti
Lubov Fominskaja [6]

Answer:

Secondary structure

Explanation:

Stricture of proteins can be categories into 4

Primary structure, secondary structure, tertiary structure and quaternary structure.

Primary structure are polypeptide chains. The polypeptide chains are formed by amino acids held together by peptide bonds.

Secondary structure refers to the folding of polypeptides chains. Two most common secondary structures are alpha helix and beta pleated structure. These folding occurs because of hydrogen bonding between the oxygen of the carbonyl of one amino acid and the hydrogen of another amino acid.

Therefore, hydrogen bonding is crucial for secondary structure of the protein.

4 0
4 years ago
The use of existing information in books, articles, and electronic databases is known as Group of answer choices Primary researc
BARSIC [14]

Answer:

Secondary research  

Explanation:

Secondary research involves using already existing data, like what can be found in in books, articles, and electronic databases.

A is wrong. Primary research is the research that you do to obtain new information, as in experiments or in interviews and surveys.

B is wrong. Qualitative research is the gathering of non-numerical data.

C is wrong. Summative research is done at the end of a project to determine its success. It can also point the way to future research projects.

5 0
3 years ago
10.0 g of nickel is cooled to 2.0 °C and
Bas_tet [7]

Answer:

73.68 J

Explanation:

To find the energy absorbed by nickel, you need to use the following equation:

Q = mcΔT

In this equation,

-----> Q = energy (J)

-----> m = mass (g)

-----> c = specific heat (J/g°C)

-----> ΔT = change in temperature

The change in temperature is found by subtracting the initial temperature from the final temperature. You can plug the given values into the equation and simplify to find the energy absorbed.

m = 10.0 g

c = 0.120 J/g°C

ΔT = 63.4 °C - 2.0 °C = 61.4 °C

Q = mcΔT

Q = (10.0 g)(0.120 J/g°C)(61.4 °C)

Q = 73.68  J

6 0
2 years ago
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