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Fittoniya [83]
3 years ago
5

2. Draw a picture of your home. Where does the sun rise relative to your house? Where does the sunset? On the picture, indicate

these two locations.
Chemistry
2 answers:
Semmy [17]3 years ago
8 0

Answer:

sun rises in the east so to the right of the front of your house and sets to the left which is south.

Explanation: what i just said

timurjin [86]3 years ago
4 0

Answer:

sun rises in the east so to the right of the front of your house and sets to the left which is south.

Explanation:

Brainliest?

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What is the percent by mass of oxygen in carbon dioxide (CO2)?
wariber [46]

Answer:

= 72.73%

Explanation:

The percentage by mass of an element is given by;

% element = total mass of element in compounds/molar mass of compound × 100

The mass of oxygen in carbon dioxide = 32 g

Molar mass of CO2 = 44 g

Therefore;

% of O2 = 32/44 × 100%

             <u>= 72.73%</u>

8 0
3 years ago
Choose the following statements that show evidence for a chemical reaction.
Leno4ka [110]

Explanation:

A chemical reaction is defined as the reaction in which bonds between the reactants either break or form which leads to the formation of a new substance.

For example, 2Li + Cl_{2} \rightarrow 2LiCl

So, when we drop a sodium metal into water then it produces a frizzing sound which shows the metal is reacting with water.

We know that when two aqueous solutions chemically react with each other then it may lead to the formation of an insoluble substance which is known as precipitate.

This means that formation of a precipitate is also a chemical reaction.

Thus, we can conclude that following are the statements which show evidence for a chemical reaction.

  • Dropping sodium metal into water produces fizzing.
  • Mixing two aqueous solutions produces a precipitate.
8 0
3 years ago
What is the volume of 0.200 mol of an ideal gas at 200. kPa and 400. K?
gregori [183]

The ideal gas under STP is 22.4 L/mol. While the gas has a rule of P1V1/T1=P2V2/T2. So the volume under 101 kPa and 273 K is 0.2*22.4=4.48 L.


7 0
3 years ago
Read 2 more answers
Please help asap!!!!
djyliett [7]
B is the answer..!
Disturbance is in a circular motion
7 0
3 years ago
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Identify what type of reaction is below. Also, determine what coefficients that would balance the chemical equation. ___ C4H10 +
Evgen [1.6K]

This is a combustion reaction because it is being combined with oxygen. Then to balance you will put the number of carbons you have or 4 in front of the CO2 and then same with H2. Then you will add up the oxygen and divide it by two to get. 1, (13/2), 4, 5

7 0
3 years ago
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