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rewona [7]
3 years ago
13

Can someone please help me with number 10

Chemistry
1 answer:
Ainat [17]3 years ago
3 0
Match every A with T and every C with G. Likewise, match T with A and G with C.
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I WILL GIVE U BRAINLIEST IF UR CORRECT
KiRa [710]

Answer:

D: a new substance

Explanation:

Chemical reaction

A change in matter that produces on or more new substances

7 0
2 years ago
Read 2 more answers
How many moles of butane (C4H10) must be burned in an excess of O2 to produce
Sedbober [7]

Answer: 6,25 moles

Explanation: mark amount of butane x.

From equation you can calculate x in a following way:

2/x = 8/25. 8x = 50. And x = 6,25

4 0
2 years ago
When wood burns, the mass of the ash is less than the mass of the original wood. Yet the law of conservation of matter says that
satela [25.4K]

Explanation:

According to the law of the conservation of mass, 'mass is conserved in a chemical reaction. The mass cannot be created nor be destroyed in a chemical process'.

This law holds true for the burning of wood also. Although the wood burns to produce ash which weighs less than wood but also, it produces some soot and other gases and the sum of the masses of all these is equal to the sum of the masses of wood and oxygen that reacted with it.

7 0
2 years ago
What can occur in physical change ?
Alexandra [31]

Within a physical change, an element can change forms, such as going from solid to a liquid through melting. Color change can also occur during a physical change. Physical changes are very different from chemical changes. In a chemical change the element itself changes into something else within a reaction, such as combustion (burning).


Hope this helped

5 0
3 years ago
What is the structure of an artery ?
wariber [46]
Well this is a bio question but it goes the tunica interna the tunica media then the tunica externa.
8 0
2 years ago
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