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Gnoma [55]
3 years ago
13

Can someone help me to answer the questions 8 and 9

Chemistry
1 answer:
Elena-2011 [213]3 years ago
3 0
Idk it's stupid do it yourself
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List the number of protons, neutrons, and electrons in....( there is a pic)
notsponge [240]
There are 6 protons, 7 neutrons, and 6 electrons since the atomic mass is rounded to 13.
3 0
3 years ago
A compound formed from titanium and oxygen has the formula TiO2. Which of the following is true about the ratio of number Ti and
Finger [1]

Answer:

2

Explanation:

There are some basic laws that guide the combination of elements chemically. These are the law of conservation of mass, law of definite proportion, law of multiple proportion and the law of reciprocal proportion.

For this question, the useful law to use is the law of definite proportion. Here, it is stated that no matter the method of preparation or source of preparation, the elements of a chemical compound are always present in a fixed ratio.

What this means that at any point in time, the compound titanium dioxide contains one atom of titanium and two atoms of oxygen. This means that both atoms are present at all times in a proportion of 1 to 2 .

4 0
3 years ago
1. In regards to curly hair, which of the following statements
Kamila [148]

Answer:

A and D are the answers

Explanation:

the other two don't make sense

3 0
3 years ago
Hey please answer this thanks.
Aleks04 [339]

Explanation:

Percentage composition of oxygen = (80/134) * 100% = 59.7%.

6 0
3 years ago
Isoelectric point. The isoelectric point (pI) is the pH at which a molecule has no net charge. The amino acid glycine has two io
timama [110]

Answer:

pI = 6.16

Explanation:

The pI is given by the average of the pKas that are involved. In this case,

Pka of carboxylic acid was given as 2.72 and that of the Amino group was given as 9.60. the average would then be ½(2.72+9.60)

= 6.16

6 0
3 years ago
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