All categories

4 years ago

Blank! An organism whose presence or absence reveals the environmental condition?

1 answer:

7 0

An indicator species is an organism whose presence, absence, and abundance reveals a specific environmental condition, whether it be a positive or negative condition.

You might be interested in

Calculate the values of LlU, LlH, and LlS for the following process: 1 mole of liquid water 1 mole of steam -+ at 25°C and 1 atm

vazorg [7]

Answer:

1. 46.44 Kj

2. 126.3 J|K

3. 43.34 Kj

Explanation:

change in temperature

25+274 = 298K

100+273 = 373

∆H = nC∆T + n∆H

1x75.5x75+1x40.79

= 5647.5+40.9

we convert 5647.5 to Kj

= 5.6475+40.79

= 46.44Kj

2.

∆S = 1x0.0753x(ln373/298) + 1molx40.79/373

= 0.01690 + 0.1094

= 0.1263kj/k

∆S = 126.3J|K

3.

∆U = ∆H - RTn

= 46.44-0.0831x373x1mol

= 46.44-3.09963

= 43.34

these resulting values are the correct answer to this question.

8 0

3 years ago

3. Write balanced ionic equations to show the dissolution of the following compounds in water: a) magnesium chloride

melamori03 [73]

Answer:

MgCl2 + H2O

Explanation:

7 0

3 years ago

A 4.0g Glass was heated from 5°C to 45°C after absorbing 32 J of heat. What is the specific heat of the glass?

IRINA_888 [86]

Answer:

$c=0.2\ J/g^{\circ} C$

Explanation:

Given that,

Mass of a glass, m = 4 g

Initial temperature, $T_i=5^{\circ} C$

Final temperature, $T_f=45^{\circ} C$

Heat absorbed, Q = 32 J

We need to find the specific heat of the glass. The formula for the heat absorbed is given by :

$Q=mc\Delta T\\\\c=\dfrac{Q}{m\Delta T}\\\\c=\dfrac{32\ J}{4\ g\times (45-5)^{\circ} C}\\\\=0.2\ J/g^{\circ} C$

So, the required specific heat of the glass is $0.2\ J/g^{\circ} C$ .

3 0

3 years ago

How many minutes are in 3.4 days

likoan [24]

Answer: 4896

Explanation:

5 0

4 years ago

Read 2 more answers

If the larger, metallic object is initially at rest, which of the following tables could summarize its motion over the same time

omeli [17]

Answer:

Explanation:

Its letstute.

Hopes it help you thanks

4 0

4 years ago

Read 2 more answers

Blank! An organism whose presence or absence reveals the environmental condition?​

Blank! An organism whose presence or absence reveals the environmental condition?