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3 years ago

So im confused i don't know what im supposed to do here

Chemistry

2 answers:

larisa [96]3 years ago

8 0

Answer:

save your notes in a google drive folder then go back to canvas and click on the "google drive" tab then scroll down and once you see the name of the folder you saved your notes in, click on it then hit submit

Explanation:

FromTheMoon [43]3 years ago

3 0

So I believe you are supposed to take notes based on the guiding questions (the questions on the side).

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lara31 [8.8K]

Answer:

protists

animals

fungi

plants

Explanation:

i took the test let me know if im wrong tho

8 0

3 years ago

Which equation shows conservation of mass and energy for a reaction at 101.3 kpa and 298 k?

harkovskaia [24]

Answer is: a.2h2(g) + o2(g) 2h2o(g) + 483.6 kj.

Conservation of mass (mass is never lost or gained in chemical reactions), during chemical reaction no particles are created or destroyed, the atoms are rearranged from the reactants to the products.

The law of conservation of energy states that the total energy of an isolated system remains constant; energy can neither be created nor destroyed; it can only be transformed or transferred from one form to another.

Balanced chemical reaction: 2H₂ + O₂ → 2H₂O ΔH = 483.6 kJ.

There are four hydrogen atoms and two oxygen atoms on both side of balanced chemical reaction.

3 0

3 years ago

Read 2 more answers

Which could describe the motion of an object? Select 3 correct answers. distance = 10 meters and displacement = 1 meter distance

Anit [1.1K]

Answer:

The three correct statements which could describe the motion of an object are:

distance = 10 meters and displacement = 1 meter

distance = 10 meters and displacement = 0

distance = 10 meters and displacement = 10 meters

Explanation:

Motion is the change of position of an object along any path. As such, the path can be rectilinear or along a curve whose direction is variable.

Two important characteristics used to describe a motion are the length of the path traveled and the final distance from the starting point.

The length of the path traveled is what distance describes. The final distance from the starting point to the final point is what displacement describes.

The maginitude of the displacement is the difference between the final position and the starting position.

When the path traveled is rectilinear, the distance and the magnitude of the displacement are the same.

When the path is not rectilinear, the distance (the length of the path) is always greater than the magnitude of the displacement.

Thus, as for the correct statements, you have:

distance = 10 meters and displacement = 1 meter

This means that the object traveled along a 10 meters path, but since it was not rectilinear, the difference between the final position and the starting position is just 1 meter.

distance = 10 meters and displacement = 0

This means that the object traveled 10 meters but it ended back in the very same place from which it departed (a complete turn around a table, for example).

distance = 10 meters and displacement = 10 meters

This means that the travel was in the trip was alogn a straight line, and the object traveled 10 meters and ended 10 meters away from the starting place.

As for the two incorrect statements:

distance = 0 and displacement = 10 meters

distance = 1 meter and displacement = 10 meters

It is not possible that the object ended up 10 meters away from where it was (the displacement), by traveling just 1 meter less than that.

8 0

3 years ago

Read 2 more answers

This really isn't a question, but have a good day!

larisa86 [58]

Answer:

U TOO

Explanation:

THX FOR EM POINTS.

5 0

4 years ago

Read 2 more answers

Help!!!

Mrac [35]

Answer:

Explanation:

Atomic mass is based on a relative scale and the mass of 12C

(carbon twelve) is defined as 12 amu; so, this is an exact number.

Why do we specify 12C? We do not simply state that the mass of a C atom is

12 AMU because elements exist as a variety of isotopes.

Carbon exists as two major isotopes, 12C, and 13C ( 14C exists and has

a half life of 5730 y, 10C and 11C also exist and their half lives are

19.45 min and 20.3 days respectively). Each carbon atom has the

same number of protons and electrons, 6. 12C has 6 neutrons, 13C has

7 neutrons, and 14C has 8 neutrons and so on. So, we must specify

which C atom defines the scale.

All the masses of the elements are determined relative to 12C.

Average Atomic Mass

Since many elements have a number of isotopes, chemists use average

atomic mass. On the periodic table the mass of carbon is reported as

12.011 amu. No single carbon atom has a mass of 12.011, but in a handful

of C atoms the average mass of a carbon atom is 12.011.

Why 12.011?

If a sample of carbon was placed in a mass spectrometer the

spectrometer would detect two different C atoms, 12C and 13C.

The natural abundance of 14C, 10C and 11C in geologic (i.e. old) samples is so low that we cannot

detect the effect these isotopes have on the average mass.

From the information collected from the mass spectrometer the average

mass of a carbon atom is calculated.

The mass of 12C is, of course, 12 amu.

13C is 1.0836129 times heavier than 12C; so, the mass of 13C is 13.003355

amu.

98.89% of the sample is 12C, and

1.11% of the sample is 13C

4 0

3 years ago