Chemistry, 26.12.2019 03:31 batmanmarie2004

Sometimes human actions can have both positive and negative environmental impacts.

a negative impact of a large, hydroelectric dam is that it backs up water sometimes for miles behind it, destroying natural habitat that once was there.

but a positive environmental impact of a dam is that

Answers: 2

Show answers

Answers

Answer from: zahid79

Besides the negative environmental impact of dams there are also many positive environmental impact of dams. Dams help to prevent flooding and the water can be stored to provide energy like the hydro electric power

Explanation:

When a dam is constructed in a area whenever there is drought in the areas the stored water in the dam will be helpful for irrigation and drinking purpose. The water stored are made to fall on the turbines and produce hydro electric power

Dams even help to prevent floods excess of water will be stored in the dam and hence the effect of flooding will be reduced and the water stored can be used efficiently

These are some of the positive environmental impacts of the dam

Answer from: Quest

answer: e. sour taste

explanation: acids are those substances which dissociates in water to give $h^+$ ions. as they dissociate to give ions, they act as electrolytes and thus are electrically conductive. acids are sour in taste. example: hcl

$hcl\rightarrow h^++cl^-$

bases are those substances which dissociates in water to give $oh^-$ ions or accepts $h^+$ ions. as they dissociate to give ions, they act as electrolytes and thus are electrically conductive. bases are bitter in taste. bases are slippery in nature.

$naoh\rightarrow na^++oh^-$

$nh_3+h^+\rightarrow nh_4^+$

Answer from: Quest

as given the equation is

2al + 6 hcl > 2 alcl3 + 3 h2(g)

as per equation two moles of aluminum reacts with six moles of hcl to give two moles of alcl3 and three moles of hydrogen gas

given: three moles of al are present and 7 moles of hcl

for three moles of aluminum nine moles of hcl will be required

however as 7 moles of hcl are present so the limiting reagent is hcl

hcl is going to decide the number of moles of product formed

when six moles of hcl are present = 3 moles of h2 are formed

when one mole of hcl is present == 3/6 mole sof h2 will be formed

when 7 moles of hcl are present = 3 x 7/ 6 moles of h2 will be formed = 3.5 moles of h2

Another question on Chemistry

Chemistry, 21.06.2019 22:30

Ibeg i need 20. a reaction produces 4.93 l of oxygen, but was supposed to produce 1 mol of oxygen. what is the percent yield?

Answers: 1

Answer

Chemistry, 23.06.2019 03:00

Use the half-reactions of the reaction au(oh)3 + hi -> au +i2 +h2o to answer the questions

Answers: 1

Answer

Chemistry, 23.06.2019 03:40

The following questions a24 - a26 relate to 100 ml of 0.0150 m solution of benzoic acid (c6h3cooh). ka(c6h3cooh) = 6.4 x 10^-5. what is the ph of the solution after the addition of 1 x 10^-3 moles of naoh? you may assume no volume change to the solution upon addition of the naoh.

Answers: 2

Answer

Chemistry, 23.06.2019 06:30

Which of these describes how heat is transferred by convection* a. sunlight travels through space without the aid of fluids or solids. b. warm air rises and takes the heat with it, eventually, it cools and sinks c. air at the equator rises and sinks at the poles. d. air molecules touch the warm ground, heating them up *not conduction

Answers: 3

Answer

You know the right answer?

Sometimes human actions can have both positive and negative environmental impacts.

a neg...

Questions