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vfiekz [6]
3 years ago
7

Which of the following was a major contribution to chemistry by antoine lavoisier

Chemistry
1 answer:
Artemon [7]3 years ago
8 0
 he showed that oxygen is required to burn.
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What holds the two strands of a DNA molecule together?A. Ionic bonds between negatively and positively charged ionsB. Covalent b
statuscvo [17]

Answer:

D. Hydrogen bonds between complementary base pairs89

Explanation:

A DNA molecule is composed of two long polynucleotide chains made of four types of nucleotide subunits, two purines (adenine and guanine) and two pyrimidines (cytosine and thymine). These nucleotides are joined by covalent bonds forming a phosphate-sugar backbone. <em>These strands are held to one another with hydrogen bonds between the base portions of complementary nucleotides.</em>

I hope you find this information useful and interesting! Good luck!

8 0
3 years ago
How do elements differ going from left to right across a period on the periodic table?
Nuetrik [128]
Their atomic number increases
6 0
2 years ago
Some growth regulators are useful to farmers and gardeners.<br> O True<br> O False
lisov135 [29]

Answer:

True

Explanation:

The first artificial use of a PGR was to stimulate the production of flowers on pineapple plants. They are now used widely in agriculture. Plant hormones are also used in turf management to reduce the need to mow, to suppress seedheads, and to suppress other types of grass.

3 0
3 years ago
1. If the pressure of a fixed volume of gas decreased in a sealed container, what variable would you think changed? did this var
grandymaker [24]

Answer:

Temp decreased

Explanation:

If the container is sealed and the pressure DEcreases, then the temperature DEcreased

PV = n RT     n  R   V   are constant   if  P goes down then so does T    

8 0
1 year ago
A chemical reaction takes place in which energy is absorbed. Arrange the characteristics of the reaction in order from start to
marshall27 [118]
Endothermic reactions, on the other hand, absorb heat and/or light from their surroundings. For example, decomposition reactions are usually endothermic. In endothermic reactions, the products have more enthalpy than the reactants. Thus, an endothermic reaction is said to have a positive<span> enthalpy of reaction. This means that the energy required to break the bonds in the reactants is more than the energy released when new bonds form in the products; in other words, the reaction requires energy to proceed.</span>


3 0
3 years ago
Read 2 more answers
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