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Korvikt [17]
3 years ago
8

If you pump air into cycle tyre a slight warming effect is noticed at valve stem why

Chemistry
1 answer:
Mashutka [201]3 years ago
6 0

As the air molecules move through the valve they have friction as they hit the walls, and its this friction that causes it to heat up.

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Properties of waves poem plzz help!!!!!!
GalinKa [24]

Answer:

They include frequency, period,speed,amplitude and phase

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3 years ago
Balance the following equation<br><br> CH₄ + O₂ → CO₂ + H₂O
nalin [4]

Answer:

CH4 + 2 O2 - - - > CO2 + 2 H2O

Explanation:

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Choose the correct coefficients to balance the following equation:
umka21 [38]
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Fill in the blanks below using vocabulary terms-reactants, products, limiting reactant, excess reactant.
slamgirl [31]

Answer:

The vocabulary terms are in the correct order.  

Explanation:

The substances that undergo chang are called <em>reactants</em>. They are what create the products. Reactants are on the left side of the equation while the products are on the right side of the equation. The new substances are called <em>products</em>. In other words, what is produced? The products are produced. The reactant that will be used up first is called a <em>limiting reactant</em>. Why? Because it is what limits the reaction. It determines how much products can be made. The reactant that is left over then, is called the <em>excess reactant.</em> That is what is left in excess and does <u>not</u> determine how much product is made.

7 0
3 years ago
An aluminum cylinder has a radius of 3.2 cm and a length of 8.6 cm. What is the mass of the aluminum cylinder if aluminum has a
Hatshy [7]

Answer:

750g of Aluminum

Assuming 8.6 cm lenth is the height of the cylinder. The volume of a cylinder is: V = \pi*r^2*h

V = 3.14cm x 10.24cm x 3.6cm

V = 280cm^3

Now density = mass/volume

2.7g/cm^3 = mass/280cm^3

2.7g/cm^3 x 280cm^3 = mass/<u>280cm^3</u> x <u>280cm^3</u>

= 750g of Aluminum

5 0
3 years ago
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