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yan [13]
3 years ago
6

will give brainliest answer + 20 points! pls help Calculate the volume of solution of 3.6 M NH4Cl needed to prepare 350.0 mL of

1.24 M NH4Cl . Report your answer in mL with 3 significant figures.
Chemistry
1 answer:
mina [271]3 years ago
4 0

Answer:

Do it yourself.

Explanation:

I just got 20 points!

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Question 3 (1 point)
bija089 [108]

Answer:

Im pretty sure its B

Explanation:

6 0
4 years ago
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The early ancestors of the horse (shown in the picture) were adapted to life in tropical forests. Gradually the forests disappea
Gre4nikov [31]

So here you go are taller with long legs and are capable of great speed to escape predators

8 0
3 years ago
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Which organisms dose the mouse in the food web provide energy for? a. deer and snake b. hawk and coyote c. grasshopper and snake
Delicious77 [7]
I would say B) hawk and coyote.


Hope this helps!
8 0
3 years ago
1)The average lethal dose of Valium is 1.52 mg/kg of body weight. Estimate how many grams of Valium would be lethal for a 200.-l
oksano4ka [1.4K]

Answer:

1. 0.138g of valium would be lethel in the woman

2. 125mg/min is the drip of the patient

Explanation:

1. In a body, an amount of Valium > 1.52mg / kg of body weight would be lethal.

A person that weighs 200lb requires:

200<u>lb</u> × (453.6<u>g</u> / <u>1lb</u>) × (1kg / 1000<u>g</u>) = <em>90.72kg (Weight of the woman in kg)</em>

90.72kg × (1.52mg / kg) =

137.9mg ≡

<h3>0.138g of valium would be lethel in the woman</h3>

2. The IV contains 1.5g = 1500mg/mL.

If the patient is receiving 5.0mL/h, its rate in mg/h is:

5.0<u>mL</u>/h × (1500mg/<u>mL</u>) = 7500mg/h

Now as 1h = 60min:

7500mg/<u>h</u> × (1<u>h</u> / 60min) =

<h3>125mg/min is the drip of the patient</h3>
7 0
4 years ago
Which of the following compounds is an unsaturated hydrocarbon?
Jobisdone [24]

Answer:

Explanation:

Saturated hydrocarbons are defined as the hydrocarbons in which a single bond is present between carbon and carbon atoms.These are called as alkanes. The general formula for these hydrocarbons is C_nH_{2n+2}

Unsaturated hydrocarbons are defined as the hydrocarbons which have double or triple covalent C-C bonds. They are known as alkenes and alkynes respectively. The general formula for these hydrocarbons is C_nH_{2n} and C_nH_{2n-2}.

1. Propyne is C_3H_4 and is an unsaturated hydrocarbon.

2. Methane is CH_4 and is a saturated hydrocarbon

3. Nonane is C_9H_{20} is a saturated hydrocarbon.

4. Methyl is CH_3 and is a saturated alkyl group.

3 0
4 years ago
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