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slamgirl [31]
3 years ago
7

suppose the mass spectrum of a hypothetical monatomic element X contains a signal at mass number 13 and another of identical hei

ght at mass number 15
Chemistry
1 answer:
Illusion [34]3 years ago
6 0
Average the numbers 13 and 15 to get 14amu.
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CORO<br> Name three ways that scientists can ensure their results<br> are reliable
Leya [2.2K]

Answer:

Reliability. When a scientist repeats an experiment with a different group of people or a different batch of the same chemicals and gets very similar results then those results are said to be reliable. Reliability is measured by a percentage – if you get exactly the same results every time then they are 100% reliable.

Explanation:

Sorry, I only got one way.

5 0
2 years ago
CAN SOMEONE HELP ME?!?! IM CONFUSED
Sati [7]

Answer: Solar winds have an influence all the way to about 160 AU from the Sun. About how many kilometers is that?

24,000,000,000 km

48,000,000,000 km

240,000,000,000 km

480,000,000,000 km

Explanation:

4 0
3 years ago
Heroin was originally going to be called "wunderlich", a German word for wonderful, since one chemist thought the substance made
Zarrin [17]

Answer:

heroic

Explanation:

Bayer, a German pharmaceutical company, named the substance it synthesized "heroin", probably from the word heroisch, German for heroic, because in field studies people using the medicine felt "heroic".

BTW, I found this information on this wedsite: https://www.answers.com/Q/Where_did_heroin_get_its_name

Also, if you want some more history about this drug, you can visit this article: https://www.narconon.org/drug-information/heroin-history.html

5 0
3 years ago
The mass of 2.50 moles of calcium fluoride is ____ grams
Vesna [10]

Answer:

195.187016

Explanation:

3 0
3 years ago
Read 2 more answers
Write the concentrated sulphuric acid H2C2O42H2O=2H2O+CO2+CO
masha68 [24]

Answer:

H2C2O4.2H20 → CO2 + CO + H2O

Explanation:

Oxalic acid crystals are nothing but dehydrated oxalic acid (H2C2O4 . 2H2O).

On heating, the water of crystallization is lost first. Then, the dehydrated oxalic acid decomposes into carbon dioxide(CO2), carbon monoxide(CO) and water(H2O).

Equations involved :

H2C2O4 . 2H2O → H2C2O4 + 2H2O

H2C2O4 → CO2 + HCOOH (FORMIC ACID)

HCOOH → CO + H2O

Overall equation : H2C2O4.2H20 → CO2 + CO + H2O

4 0
3 years ago
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