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2 years ago

Describe the trend (pattern) in the numbers of mobile phone owners in the Uk since 1990.

Chemistry

1 answer:

Inessa05 [86]2 years ago

4 0

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)

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.

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Igoryamba

Answer:

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3 years ago

What mass of sodium hydroxide will completely neutralize 2.5 mol of sulfuric acid?

VMariaS [17]

Given :

2.5 mole of Sulfuric acid $( H_2SO_4 )$ .

To Find :

Mass of sodium hydroxide will completely neutralize 2.5 mol of sulfuric acid

Solution :

Let us assume volume of water be 1 L .

Now , we know , to neutralize 1 mole of sulfuric acid we need 2 moles of NaOH .

So , for 2.5 mole sulfuric acid required 5 mole of NaOH .

Moles of NaOH ,

$n=M\times Volume \\\\n=5\times 1=5\ moles$

Molecular mass of NaOH , M.M = 58.44 g/mol .

Mass of 5 moles of NaOH :

$m=5\times 58.44\ g\\\\m=292.2\ g$

Hence , this is the required solution .

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3 years ago

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Karolina [17]

Answer:

The answer is

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Hope this helps you

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3 years ago

Which conditions are necessary for natural selection? Check all that apply.

zepelin [54]

Answer:

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The environment changes.

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Explanation:

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Also, environmental changes induced natural selection whereby organisms must adapt to changes around them.

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3 years ago

Read 2 more answers

What are the roles of producers, primary consumers, secondary consumers, tertiary consumers for the trophic levels in the energy

Nesterboy [21]

This question is more for Biology than Chemistry, but the role of producers is to make energy (food) to be consumed. In a pyramid diagram, the producers would be at the bottom. Now going up the pyramid, the primary conumers are the first to consume producers and obtain energy from them. As you go up the pyramid, the secondary consumers will consume the primary consumers as a way to obtain energy, and the same goes for tertiary consumers towards secondaries.

As you go up the energy pyramid, you will notice a trend that there is less energy being obtained from each consumer. In other words, the producers will ALWAYS have more energy than the tertiary consumers.

I hope this answers your question.

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3 years ago