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amm1812
4 years ago
9

1. Is an egg being cooked a psychical or chemical change?

Chemistry
2 answers:
Natasha_Volkova [10]4 years ago
8 0
1. physical
2. physical
3.chemical
4.chemical 
kap26 [50]4 years ago
4 0
The second one is chemical change
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In a hydrogen fuel cell, hydrogen gas and oxygen gas are combined to form water. write the balanced chemical equation describing
UkoKoshka [18]
I believe it is this:
2 H2 + O2 ---> 2 H2O
4 0
3 years ago
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the criterion for whether a reaction proceeds spontaneously is delta g not delta g not, because delta g takes into account the c
Lina20 [59]

Yes this statement is true because the concentration is two help determine whether the reaction is moving forward or backwards direction

Here it is at standard condition and delta g not is always the same because it denote that the reactant/product are at standard temperature or product as the reaction goes toward equilibrium delta g change because reaction is proceeding forward and  delta g not is standard change in free energy between reactant and product. delta g is used to find gibbs free energy in nonstandard conditions while delta g naught is used to determine gibbs free chemical reaction energy under normal conditions. that's why this statement is true.

Know more about delta g and delta g not

brainly.com/question/28607353

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5 0
1 year ago
Is 2Na+Cl2=2NaCl a balanced chemical equation
lilavasa [31]

Hey there!

2Na + Cl₂ → 2NaCl

This is a balanced chemical equation.

There are 2 atoms of sodium (Na) on the left, and 2 atoms of sodium (Na) on the right.

There are 2 atoms of chlorine (Cl) on the left, and 2 atoms of chlorine (Cl) on the right.

This means the equation is balanced since there are the same amount of each element on both sides.

Hope this helps!

3 0
3 years ago
How do scientists determine the number of neutrons in an isotope of an atom? O They find the number of protons. 0 They add the n
Elza [17]

Answer:

The three naturally-occurring isotopes of hydrogen. The fact that each isotope has one proton makes them all variants of hydrogen: the identity of the isotope is given by the number of protons and neutrons. From left to right, the isotopes are protium (1H) with zero neutrons, deuterium (2H) with one neutron, and tritium (3H) with two neutrons.

The term isotope is formed from the Greek roots isos (ἴσος "equal") and topos (τόπος "place"), meaning "the same place"; thus, the meaning behind the name is that different isotopes of a single element occupy the same position on the periodic table.[2] It was coined by a Scottish doctor and writer Margaret Todd in 1913 in a suggestion to chemist Frederick Soddy.

The number of protons within the atom's nucleus is called atomic number and is equal to the number of electrons in the neutral (non-ionized) atom. Each atomic number identifies a specific element, but not the isotope; an atom of a given element may have a wide range in its number of neutrons. The number of nucleons (both protons and neutrons) in the nucleus is the atom's mass number, and each isotope of a given element has a different mass number.

For example, carbon-12, carbon-13, and carbon-14 are three isotopes of the element carbon with mass numbers 12, 13, and 14, respectively. The atomic number of carbon is 6, which means that every carbon atom has 6 protons, so that the neutron numbers of these isotopes are 6, 7, and 8 respectively.

4 0
3 years ago
If a plant produces 3.21 mol of c6h12o6, how many moles of co2 are needed?
xenn [34]
Photosynthesis is the process by which CO₂ is converted to an organic compound. The complete reaction is as follows;
6CO₂ + 6H₂O --> C₆H₁₂O₆ + 6O₂
stoichiometry of CO₂ to C₆H₁₂O₆ is 6:1
For 1 mol of C₆H₁₂O₆ to be formed - 6 mol of CO₂ is required 
Therefore for 3.21 mol of C₆H₁₂O₆ to be formed - 6 x 3.21 mol of CO₂ required 
Number of moles required are - 19.26 mol of CO₂ 
3 0
3 years ago
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