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Cloud [144]
3 years ago
9

FREE BRAINLIEST IF CORRECT (FILL IN THE BLANKS

Chemistry
2 answers:
Pie3 years ago
8 0
Hard materials such as brick walls tend to (block sound waves, they bounce off of the brick creating an echo) sound waves while soft materials such as thick carpet tend to (absorb sound waves).

Hope this helps!
Sedaia [141]3 years ago
5 0

Answer:

Hard materials such as brink walls tend to increase.

Sound waves while soft materials such as thick carpet tend to decrease.

You might be interested in
What do element; atoms; molecule; chemical bond; compound; mixture; and substance have in common
sleet_krkn [62]
They are all things you can do to elements on the periodic table?
7 0
3 years ago
Flammability is a material’s ability to burn in the presence of
frosja888 [35]

Answer:

Flammability is a material’s ability to burn in the presence of <u><em>oxygen.</em></u>

Explanation:

Flammability can be described as the ability of a substance to get ignited. Flammability will lead to fire or combustion. Some substances are highly flammable like Benzene. Other tend to be just flammable. And there are also compounds which will nor be flammable at all as they won't react with oxygen. Examples of these substances include helium, steel or glass.

The flammability of a substance shall be considered a very important aspect when storing or transporting a substance.

5 0
3 years ago
How many grams of calcium carbonate were used if you drew the periodic table on the sidewalk using
german

Based on the data provided, there are 25 g of calcium carbonate in 1.505 × 10^23 atoms.

<h3>What is the moles of calcium carbonate in 1.505 × 10^23 atoms of calcium carbonate?</h3>

The mole of a substance can be calculated as follows:

  • Moles of substance = number of particles/6.02 × 10^23

Moles of calcium carbonate = 1.505 × 10^23/6.02 × 10^23

Moles of calcium carbonate = 0.25 moles

The mass of calcium carbonate in 0.25 moles is calculated as follows:

  • mass = moles × molar mass

molar mass of a calcium carbonate = 100 g/mol

mass of calcium carbonate = 0.25 × 100 = 25 g.

Therefore, there are 25 g of calcium carbonate in 1.505 × 10^23 atoms.

Learn more about molar mass and mass at: brainly.com/question/15476873

8 0
2 years ago
What change must made to the coefficients to balance this equation?
tresset_1 [31]

<u>Switch the 3 and the 4</u>, this change must made to the coefficients to balance this equation.

Now, the correct balance equation is C₃H₈ + 5 O₂ → 3 CO₂ + 4H₂O

This method of balancing chemical equations involves assigning algebraic variables as stoichiometric coefficients to each species in the unbalanced chemical equation.

Learn more about balance equation here:- brainly.com/question/11904811

#SPJ1

8 0
1 year ago
Which of the following did Malthus fail to take into consideration?
saveliy_v [14]

Answer: humans would find more efficient ways of growing crops

Explanation:

4 0
4 years ago
Read 2 more answers
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