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3 years ago

A solid calcium metal reacts with molecular oxygen. WORD EQUATION = CHEMICAL EQUATION =

Chemistry

1 answer:

Ne4ueva [31]3 years ago

5 0

Word equation - calcium + oxygen -> calcium oxide
Chemical equation - Ca + O2 -> CaO2

Hope this helps!

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Which is located inside the lung?

ZanzabumX [31]

Answer:what are the options????

Explanation:

4 0

3 years ago

If your end product is 200.0 g KMnO4 how much KOH did you start with?

aniked [119]

Answer:

$m_{KOH}= 142.0gKOH$

Explanation:

Hello there!

In this case, according to the following chemical reaction we found on goo gle as it was not given:

$2MnO_2+4KOH+O_2\rightarrow 2KMnO4+2KOH+H_2$

Whereas we can see a 2:4 mole ratio of potassium permanganate product to potassium hydroxide reactant with molar masses of 158.03 g/mol and 54.11 g/mol respectively. In such a way, by developing the following stoichiometric setup, we obtain the mass of KOH to start with:

$m_{KOH}=200.0gKMnO_4*\frac{1molKMnO_4}{158.03gKMnO_4}*\frac{4molKOH}{2molKMnO_4} *\frac{56.11gKOH}{1molKOH}\\\\m_{KOH}= 142.0gKOH$

Best regards!

8 0

3 years ago

What type of tissue is attached to the skeletal system and helps bones move f muscle tissue g cardiac tissue h adipose tissue j

MrMuchimi

F) muscle tissue hope this helps you !!

6 0

3 years ago

A nuclear fission reaction has mass difference between the products and the reactants of 3.86 g. Calculate the amount of energy

iris [78.8K]

<u>Answer:</u> The amount of energy released by the reaction is $3.47\times 10^{14}J$

<u>Explanation:</u>

To calculate the energy released, we use Einstein equation, which is:

$E=\Delta mc^2$

where,

$\Delta m$ = difference between the masses of products and reactants = 3.86 g = 0.00386 kg (Conversion factor: 1 kg = 1000 g)

c = speed of light = $3\times 10^8m/s$

Putting values in above equation, we get:

$E=(3.86\times 10^{-3}kg)\times (3\times 10^8m/s)^2$

$E=3.47\times 10^{14}J$

Hence, the amount of energy released by the reaction is $3.47\times 10^{14}J$

3 0

3 years ago

write the spontaneous net cell reaction. include physical states. net cell reaction: 2al(s) 2br {2}(l)

ElenaW [278]

The net cell reaction is: 2Al(s) + 2Br2(l) → 4Br(s) + 2Al2O3(s)

What is a net cell reaction?

A net cell reaction is the overall chemical reaction that occurs during a redox reaction in a cell. It is the sum of all of the individual chemical reactions that take place in the cell and is usually written as an equation with the reactants on the left-hand side and the products on the right-hand side.

What is a chemical reaction?

A chemical reaction is a process in which two or more substances interact to form new substances with different chemical properties. Chemical reactions involve the breaking and forming of chemical bonds, releasing or absorbing energy, and can be either exothermic (releasing energy) or endothermic (absorbing energy).

To know more about chemical reactions,

brainly.com/question/16416932

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8 0

1 year ago