CHEMISTRY MIDDLE SCHOOL

Darrell finds a bottle of what looks like Clearwater with dirt settled at the bottom when he shakes the bottle if the water gets dirty which term best describes the matter in the bottle

Answers

Answer 1
Answer:

Explanation:

A mixture in which solute particles are present in a non-uniform composition in the solute is known as a heterogeneous mixture.

For example, mud in water is a heterogeneous mixture.

On the other hand, a mixture in which there is uniform composition of solute particles in the solvent is known as a homogeneous solution.

For example, sugar dissolved in water is a homogeneous solution.

Therefore, we can conclude that the given solution is a heterogeneous mixture.

Answer 2
Answer: The answer to your question is homogenous mixture.

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HIGH SCHOOL

A balloon is a sphere with a radius of 5.0 m. The force of air against the walls of the balloon is 45 N. What is the air pressure inside the balloon? (surface area = 12.56 x radius^2; 1 Pa = 1 N/m^2) A. 1.4 x 10^3 Pa

B. 3.6 x 10^2 Pa

C. 1.4 x 10^-1 Pa

D. 3.6 x 10^-2 Pa

***Idk how to solve this... pls explain?? thx :)

Answers

Pressure is the force exerted on an object per unit area. The equation is expressed as:

P = F / A

From the given above, we substitute the values to the equation.

P = F/A
P= F / (12.56r²)
P = 45 N / (12.56 x 5²
P = 0.143 N/m²

Therefore, the correct answer is option C, 1.4 x 10^-1 Pa.
HIGH SCHOOL

Where is feces stored before excretion?
small intestine
stomach
urethra
rectum

Answers

Rectum :)

Hope I helped!

Answer:

rectum

Explanation:

HIGH SCHOOL

Would calcium-40 be stable or unstable?

Answers

Calcium-40 would be stable.


Answer:

stable ma

Explanation:

yw luv ‍

MIDDLE SCHOOL

Describe the position of our solar system in the Milky Way galaxy and the universe.

Answers

Answer:

Well some people would argue that since the universe is infinite (or so scientists say), any given point can be the center of the universe.  So our solar system and milky way could be the center of the universe

HIGH SCHOOL

What is the ratio of phosphorus atoms to oxygen atoms in a compound?

Answers

The ratio of phosphorous atoms to oxygen atoms in a compound is 2:5. The elements phosphorus and oxygen form a compound with the formula  P205. 
P:O will be 3:2 in regards to the valencies
MIDDLE SCHOOL

Based on the periodic table , which of the following groups of elements should have very similar chemical properties? A. potassium (K), aluminum (Al), neon (Ne) B. carbon (C), iodine (I), hydrogen (H) C. lithium (Li), sodium (Na), potassium (K) D. manganese (Mn), magnesium (Mg), molybdenum (Mo)

Answers

Answer:

option C= lithium , sodium and potassium shows similar chemical properties.

Explanation:

The elements shows similar chemical properties if they have same number of valance electrons.

As we move left to right in periodic table the number of valance electrons increases in case of every element

When we move top to down in the group of periodic table the number of valance electrons remain same. So the elements in same group shows similar properties.

For example:

In given options the elements in option C belongs to the same group i.e group one and all are alkali metals. That's why lithium , sodium and potassium shows similar chemical properties.

Answer:

lithium (Li), sodium (Na), potassium (K)

Explanation:

Columns in the periodic table are also called families or groups. Elements within a group have similar chemical properties. Elements that are not in the same group do not have similar chemical properties. This means that lithium (Li), sodium (Na), and potassium (K) should have very similar chemical properties since they are in the same group.

COLLEGE

How do i balance the equation

CCl4 +SbF3-----> CCl2F2 + SbCl3

Answers

Answer:

3CCl4 + 2SbF3 → 3CCl2F2 + 2SbCl3

Explanation:

CCl4 +SbF3 → CCl2F2 + SbCl3

On the left side we have 3 times F, on the right side we have 2 times F

To balance we have to multiply SbF3 (on the left side) by 2

On the right side, we have to multiply CCl2F2 by 3

CCl4 +2SbF3 → 3CCl2F2 + SbCl3

On the left side we have 2x Sb, on the right side we have 1x Sb

So we have to multiply, on the right side, SbCl3 by 2

CCl4 +2SbF3 → 3CCl2F2 + 2SbCl3

On the right side, we have 12 times Cl, on the left side we have 4 times Cl

We have to multiply, on the left side, CCl4 by 3. The balanced equation is:

3CCl4 + 2SbF3 → 3CCl2F2 + 2SbCl3

HIGH SCHOOL

How many different types of atoms are present in one molecule of aluminum hydroxide, Al(OH)3? 2 3 4 5

Answers

It asks for types, not amount. So Al, O, and H. 3

Answer: There are exactly 3 different types of atoms in one molecule of aluminum hdroxide.

Hope this helps!

HIGH SCHOOL

A __________ is a mound or ridge of sand most often found on a coastline or in the desert. butte
delta
dune
glacier

Answers

I believe the best answer is C, dune. In geography, a dune is a hill of loose sand built by wind or the flow of water. hope this helped, have an amazing day :)
I believe the answer is C
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