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What and where are alkali metals in periodic table? Explain reactivity trends.

Alkali metal have 1 outer electrons. Reactivity increases down the coloumn.
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Answered by Sandeep T. • Chemistry tutor
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In the arthmetic sequence, the first term is 3 and the fourth term is 12. Find the common difference (d) and the sum of the first 10 terms.

a. Finding du n = u 1 + (n-1)du 4 = u 1 + (4-1)d12 = 3 + 3dd = 3 b. Sum of first 10 termss n = n/2(2u 1 + (n-1)d)s 10 = 5(6 + 9d)s 10 = 30 + 45(3)s 10 = 165
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Answered by Ruchi A. • Maths tutor
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Explain the first stages of aerobic respiration that occur before the Krebs cycle.

Aerobic respiration is a controlled release of energy from organic compounds to produce ATP with the use of oxygen. It occurs in several stages: Glycolysis starts with phosphorylation (addition of phosphate ...
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Answered by Agata K. • Biology tutor
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Explain two causes of price inflation

One cause of inflation is due to the wage rate increasing at a faster rate than output. The cost of production for firms increases and to maintain profits they are likely to raise prices. When the prices ris...
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What is the effect of the imposition of a tax on high-sugar drinks in the UK?

British market for high - sugar soft drinks represents a market failure. The drinks are a demerit good and are over - consumed (Figure 1 to draw: the graph showing supply and demand curves denoted as S and D...
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Answered by Sara K. • Economics tutor
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