Mr. Potter’s physical science classes conducted an experiment to determine the density of aluminum. Here are the density values each class period came up with: 1st hour = 3.1 g/ml, 2nd hour = 3.05 g/ml, 3rd hour = 1.9 g/ml, 4th hour = 2.35 g/ml, 5th hour = 4.2 g/ml, and 6th hour = 4.0 g/ml. If Aluminum’s true density is 2.7 g/ml, how would you group the class values based on accuracy?a.

Group: 1st, 3rd, 5th, and 6th hours, with one recorded decimal place in their values


Group: 2nd and 4th hours, with two recorded decimal places in their values


b.

Group: 3rd and 4th hours, with values under the true density


Group: 1st, 2nd, 5th, and 6th hours, with values over the true density


c.

Group: 3rd hour, with a 1 value


Group: 4th hour, with a 2 value


Group: 1st and 2nd hours, with 3 values


Group: 5th and 6th hours, with 4 values


d.

Group all classes as accurate

Answers

Answer 1
Answer:

Answer;

B. Group: 3rd and 4th hours, with values under the true density. Group: 1st, 2nd, 5th, and 6th hours, with values over the true density.

Explanation;

Accuracy refers to the closeness of a measured value to a standard or known value.

Accuracy is a qualitative term referring to whether there is agreement between a measurement made on an object and its true (target or reference) value.

Answer 2
Answer: B. Group: 3rd and 4th hours, with values under the true density
Group: 1st, 2nd, 5th, and 6th hours, with values over the true density
(I just took this test)

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Which is a property of every mixture? A.One substance dissolves in another substance.
B.The molecules of one substance break down in the other.
C.Different samples of a single mixture have different characteristics.
D.One substance can be separated from another through physical means.

Answers

Answer: The correct answer is D) One substance can be separated from another through physical means.

Mixture is a combination of two or more substances that are combined or mixed physically in a way that they do not loose their identity.

This means that mixture does not undergo any chemical change and it can be separated through physical means (like filtration). It can be of solid, liquid, or gaseous molecules.

Mixture can be primarily divided into homogenous ( having uniform composition that is every sample will have same property) and heterogenous mixture ( non uniform composition that is not every sample will have same property).

Thus, option D) is a property of every mixture.

im pretty sure its d
because if it couldn't be separated it would be a compound
and a and b are essentially the same answer
c depends on homogeneous or not so it is not EVERY mixture

Plant cells have _____ and _____, which are not present in animal cells.a. mitochondria, chloroplasts
b. cell membranes, cell walls
c. chloroplasts, nucleus
d. chloroplasts, cell walls

Answers

D. chloroplasts, and cell walls.

Chloroplasts are only uses by plants for photosynthesis.
Cell walls are not present In animal cells.

A crystal's shape is determined by its organized, repeating atomic structure, called?

Answers

Answer:The constituents of a solid can be arranged in two general ways: they can form a regular repeating three-dimensional structure called a crystal lattice, thus producing a crystalline solid, or they can aggregate with no particular order, in which case they form an amorphous solid (from the Greek ámorphos, meaning

Explanation:

A group of college students working on a project on bio-gas have found some bacteria in the bio-gas plant. These bacteria can utilize methane as their source of energy and do not need oxygen for their survival. What kind of bacteria could they be?A- Archaebacteria
B- Eubacteria
C- Probacteria

Answers

The answer is (a.) Archaebacteria

Archaebacteria or Archaea are prokaryotes. They have no cell nucleus. They don't even have membrane-bound organelles in the cells. These bacteria can utilize methane as their source of energy but oxygen is not vital for their survival.

Which of the following components of the skin is innermost, or farthest from the surface of the skin? A. Sebaceous glands
B. Hair follicles
C. Hypodermis
D.. Epidermis

Answers

It's the hypodermis so the correct answer would be c

Genetic information is carried in ATP molecules.
True
False

Answers

Answer: FALSE

Explanation:

Genetic information is a information which is stored in cells of the living beings in the form of nucleic acids which can be either DNA (deoxyribonucleic acids) or RNA (ribonucleic acid). These nucleic acids store information in the coded form. These are passed from the parents to their offspring through reproduction. The ATP (adenosine triphophate) is the energy molecule present in the body after the oxidation and breakdown of food by the process of respiration. This does not carry the genetic information.

False genetic information is carried by DNA not ATP, ATP carries energy