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Mazyrski [523]
1 year ago
15

Which of the following best describes 'cold energy’?

Chemistry
1 answer:
sergey [27]1 year ago
5 0

la vaina esa es de la A no le pare loco

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Determining the Locations of Subatomic
Pani-rosa [81]

Answer: Neutron found at B. electron found at A. proton found at B

8 0
3 years ago
Write balanced molecular equation for the reaction between nitric acid and calcium hydroxide. Express your answer as a chemical
Alisiya [41]

Answer:

2HNO3 + Ca(OH)2 ===> Ca(NO3)2 + 2H2O

Explanation:

This a neutralisation reaction. The first thing to note is that this type of reaction forms salt and water.

Note that the formula of water is H2O. So write this at the right hand side.

                                    ==> H2O

Next note that the salt should contain the acid radical (NO3) and the metallic part of the base (Ca) written well following the rule for writing chemical equation; thus

                            ==> Ca(NO3)2 + H2O

The next step is to write the reactants at the right hand side of the equation;

HNO3 + Ca(OH)2 ==> Ca(NO3)2 + H2O

The final step is to count the number of atoms in each side of the equation to make sure they are equal and balanced.

In the above equation, H atoms are three at the left hand side add 2 to to H- containig compound on both side as to balance up. Thus

2HNO3 + Ca(OH)2 ===> Ca(NO3)2 + 2H2O

The equation 2HNO3 + Ca(OH)2 ===> Ca(NO3)2 + 2H2O is balance.

4 0
3 years ago
If liquid carbon disulfide reacts with 450 mL of oxygen to produce the gases carbon dioxide and sulfur dioxide, what volume of e
ivolga24 [154]

If excess carbon disulfide reacts with 450 mL of oxygen, 150 mL of carbon dioxide and 300 mL of sulfur dioxide gases would be produced respectively.

<h3>Stoichiometric calculation</h3>

The reaction between liquid carbon disulfide and oxygen is represented by the equations below:

CS_2 + 3O_2 -- > CO_2 + 2SO_2

The mole ratio of oxygen to carbon dioxide and sulfur dioxide produced is 3:1:2.

Thus, for 450 mL oxygen, 1/3 x 450 = 150 mL of carbon dioxide will be required.

Also for 450 mL of oxygen, 2/3 x 450 = 300 mL of sulfur dioxide will be required.

More on stoichiometric calculations can be found here: brainly.com/question/27287858

#SPJ1

5 0
1 year ago
Is a glow stick Endothermic or exothermic ?
Daniel [21]

Answer:

exothermic

Explanation:

7 0
2 years ago
Which option accurately describes the first two stages of photosynthesis?
Lemur [1.5K]

Answer;

A) Stage 1: Chlorophyll captures light energy. Stage 2: Light energy is converted to chemical energy.

Explanation;

-Photosynthesis is the process by which green plants use energy from the sun, water and carbon dioxide to make organic compounds such as simple sugars together with release of oxygen.

-The process occurs in tow stages; light-dependent stage and light independent stage. During light dependent stage, chlorophyll absorbs sunlight and uses it to split water molecules into hydrogen ions and oxygen atoms. In the light independent stage carbon (iv) dioxide is fixed and the result is organic compound; the light energy is converted to chemical energy.

4 0
3 years ago
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