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VashaNatasha [74]
2 years ago
10

Acid-Base Chemistry 1:Question 10

Chemistry
1 answer:
Alex777 [14]2 years ago
6 0
The hydronium ions increase and the ph goes down.
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What is the molar mass of CH2O2?
Flauer [41]
<em>M CH₂O₂:</em>
mC + mH×2 + mO₂×2
= 12g + 1g×2 + 16g<span>×2 = <u>46g/mol</u>

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5 0
3 years ago
Read 2 more answers
1) How old is a bone in which the Carbon-14 in it has undergone 8 half-lives?
gladu [14]

1) How old is a bone in which the Carbon-14 in it has undergone 8 half-lives?

Using the graph form the picture you count 8 times the halving of C¹⁴ and you arrive at 45600 years.

2) In the process of radiocarbon dating, the fixed period of radioactive decay used to determine age is called the half-life.

3) A certain byproduct in nuclear reactors, 210Po, decays to become 206Pb. After a time period of about 276 days, only about 25% of an original sample of 210Po remains. The remainder has decayed to 206Pb. Determine the approximate half-life of 210Po.

What the problem is telling you is that at 276 days only 25% original sample remains. If you divide the number of days by two the quantity of original sample will be multiplied by two, and you will have 138 days and 50% of original sample. This is the answer because the the half-life of a isotope is the time in which 50% of original quantity of radioactive atoms will disintegrate.

3 0
3 years ago
Describe the trend (pattern) in the numbers of mobile phone owners in the Uk since 1990.
Inessa05 [86]

Explanation:

<em><u>SMARTPHONE OWNERSHIP IS GROWING RAPIDLY AROUND THE WORLD, BUT NOT ALWAYS THE SAME.</u></em>

In emerging economies, the use of technology is still more common among the young and the educated

A farmer takes a selfie with a smartphone at a rally in Jaipur, India. (Vishal Bhatnagar/AFP/Getty Images)

A farmer takes a selfie with a smartphone at a rally in Jaipur, India. (Vishal Bhatnagar/AFP/Getty Images)

The chart shows that smartphone ownership in advanced economies is higher than in emerging economies.

Mobile technology has spread rapidly around the world. Today, it is estimated that more than 5 billion people have mobile devices, and more than half of these connections are smartphones. But growth in mobile technology so far has been unequal, either nationwide or within it. People in advanced economies are more likely to have mobile phones - smartphones in particular - and more likely to use the internet and social media than people in emerging economies. For example, a median of 76% across the 18 advanced economies surveyed have a smartphone, compared to a median of only 45% in emerging economies.

Smartphone ownership can vary by country, and even across developed economies. While about nine in ten or more South Koreans, Israelis and the Netherlands own a smartphone, the ownership rate is closer to six in ten in other developed countries such as Poland, Russia and Greece. In emerging economies as well, smartphone ownership rates vary significantly, from a high of 60% in South Africa and Brazil to just around four in ten in Indonesia, Kenya and Nigeria. Among the countries surveyed, ownership was lowest in India, where only 24% reported having a smartphone.

4 0
2 years ago
PLZ HELP!!!
TiliK225 [7]
1. C
2. C
3. B
4. D
5. C
6. D
7. B or C
8. B
9. A or D
10. B
11. C
12. A I think
13. B or D 


5 0
3 years ago
Read 2 more answers
Which is one ADVANTAGE of using a visual medium such as a movie or staged play to present a story?
hichkok12 [17]

Answer:

B. Viewers can see the setting and props.

Explanation:

The other answers look to be disadvantages that could hinder the story making B stand out as the only advantage listed. Allowing the viewer to see and hear the story from a film or play is also more stimulating, compared to just reading or being read aloud the story, which can better focus the viewer on the story.

4 0
3 years ago
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