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tamaranim1 [39]
3 years ago
7

Which two formulas represent compounds

Chemistry
1 answer:
SVEN [57.7K]3 years ago
4 0

CO2 ; H20- They are the only ones that, on both sides, combined with another element and bonding of atoms

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How many grams are in 3.4 moles of C2H5OH molecules? (use molar mass and round answer to the correct number of sig figs)
Salsk061 [2.6K]
Molar mads of C2H5OH:
12*2+1*5+16+1
24+5+17
46
no of moles = mass in grams/molar mass
3.4=m/46
3.4*46=m
m=156.4
m=156g
5 0
3 years ago
The enzyme beta-galactosidase acts on lactose to form galactose. In turn, the presence of galactose leads to expression of the e
san4es73 [151]

Answer:

an inducer

Explanation:

An Enzyme is a protein molecule found in cells which work as biological catalysts.

They speed up chemical reactions in the body, but do not get used up in the process, and can be used over and over again.

In chemistry inducers are molecules that regulates gene expression, and can bind to protein repressors or activators.

Lactose here acts as an inducer because it inactivates the repressor of an operon.

4 0
3 years ago
What is atomic hydrogen?<br>​
goldenfox [79]
A hydrogen atom is an atom of the chemical element hydrogen. The electrically neutral atom contains a single positively charged proton and a single negatively charged electron bound to the nucleus by the Coulomb force. Atomic hydrogen constitutes about 75% of the baryonic mass of the universe.
8 0
3 years ago
Read 2 more answers
What is the missing number in the nuclear reaction shown below 175 78 pt?
Dmitry [639]
Above question is incomplete. Complete question is
<span>What is the missing number in the nuclear reaction 175 78 pt -- 4 2 He plus 76 Os?
....................................................................................................................
Solution:

Reaction involved in present nuclear event is 
</span>175 78 Pt      →          4 2 He          +          76 Os

In above nuclear reaction, atomic mass number of Os is missing. The atomic mass number of Os = 175 - 4 = 171

Thus, complete nuclear can be written as
175 78 Pt      →          4 2 He          +       171  76 Os

3 0
3 years ago
Read 2 more answers
Which of the following people believed the atom to be indivisible?
monitta
Democritus because of Greek atomism. In the 5th century BCE, Leucippus and his pupil Democritus proposed that all matter was composed of small indivisible particles called atoms.
5 0
3 years ago
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