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AfilCa [17]
3 years ago
13

If a chemist wants to do a presumptive test on an unknown substance for the presence of cocaine, which test reagent should they

use?
Medicine
1 answer:
marysya [2.9K]3 years ago
6 0
Marquis reagent is used as a simple spot-test to presumptively identify alkaloids as well as other compounds. It is composed of a mixture of formaldehyde and concentrated sulfuric acid, which is dripped onto the substance being tested.
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Muscle that flexes wrist and adducts hand.
zvonat [6]

Answer:

Flexor capro ulnaris

Explanation:

<u>Muscle that extends and adducts the hand at wrist is called Flexor capro ulnaris. This muscle is innervated by the ulnar nerves. It consists of two heads, humeral head and ulnar head.</u>The humeral head initiates at the medial epicondyle of the humerus.The ulnar head initiates at the olecranon of the humerus. It inserts on the pisiform, the hook of hamate and the fifth metacarpal.

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3 years ago
How many mg must be used to prepare 1L of a 4% solution?
vodomira [7]

Answer:

40 mg??

Explanation:

4 0
2 years ago
Neither the experimenter nor the subjects know who is receiving the real treatment or the placebo. This type of study is called.
dsp73
Double blind experiment
6 0
1 year ago
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Whenever Mr. Fejer does not like what is being served for dinner, he bangs on the table
agasfer [191]

Answer:

you should say " IF YOU HAVE A PROBLEM WITH WHAT'S BEING SERVED MAKE YOUR OWN FOOD."

Explanation:

8 0
3 years ago
The male reproductive gland through which the ejaculatory ducts and urethra pass is called the _______. If this gland enlarges o
katen-ka-za [31]

Answer: Prostrate gland

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Prostrate gland is the part of male reproductive system. It is present at the base of the bladder. It produce the fluid which comes as seminal vesicles through ejaculatory ducts finally to the urethra. The urethra is a tube which runs through prostrate gland. In case of cancer, the imflammation of prostrate takes place. As a result of this urethra tube becomes narrow and restricts the flow of urine.

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