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3 years ago

20 Points!!!!!!!!!!!! Please Help!!!!

2 answers:

5 0

#1 is actually C.. Carrying Capacity is the population size an environment can sustain. Thats what my study guide says.

mamaluj [8]3 years ago

3 0

Number 1: (A.)
Number 2: (A.)
Number 3: (B.)

I'm probably wrong but that is what i think

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Identify this reaction HBr+ Al(OH)3 —-> H2O + AlBr3

Vikki [24]

<h2>Answer</h2>

Neutralization reaction

5 0

3 years ago

You have collected a tissue specimen that you would like to preserve by freeze drying. To ensure the integrity of the specimen,

Reika [66]

Answer:

The maximum pressure is 612.2 Pa

Explanation:

The pressure of the ice (P1) = 624 Pa

The temperature of the ice = 273.16 K

The maximum temperature the specimen = - 5 oC

= -5 + 273 = 268K

The maximum Pressure the freeze drying can be will be (P2) = ?

Using Pressure law, which shows the relationship between pressure and temperature.

P1 / T1 = P2 / T2

P2 T1 = P1 T2

P2 = P1 T2 / T1

P2 = 624 × 268 / 273.16

P2 = 612.2 Pa

The maximum pressure at which drying can be carried out is 612.2 Pa

Check the attached document more explanation. jjjjggggg

5 0

3 years ago

What is the percent yield if 3.47 g of copper is produced when 1.87 g of aluminium is reacted with excess of copper (II) sulfato

Serhud [2]

Answer:

copper is limiting

Explanation:

5 0

1 year ago

The octet rule states that, in chemical compounds, atoms tend to have _____.

olga nikolaevna [1]

The correct answer is C

4 0

2 years ago

The atomic mass of magnesium is the weighted average of the atomic masses of

Debora [2.8K]

Answer:

2. All the naturally occurring isotopes of Mg.

Explanation:

You want to know the atomic mass of the magnesium you use in the lab. That’s “natural” magnesium. So, you must use the weighted average of all the naturally occurring isotopes in natural Mg.

1. and 3. are wrong. You won’t get the correct mass for natural Mg if you use only the artificial isotopes for your calculation.

4. is wrong. You must use all the naturally occurring isotopes. The two most abundant isotopes of Mg account for only 90 % of the atoms. If you ignore the other 10 %, your calculation will be wrong.

6 0

2 years ago