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lakkis [162]
3 years ago
8

NEED HELP\ I GIVE BRAIN

Chemistry
1 answer:
Mandarinka [93]3 years ago
4 0

Answer:

The first true or false Question, I believe to be true and the second one I think it is False

Explanation:

1. The Gulf of Mexico's water is very warm.

2.  It tropical meaning a wet so it couldn't form over Dry land.

     Hope this Helps :)

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HURRY PLEASE! True or false: Making an observation is the first step of the scientific method.
lions [1.4K]

Answer:

True

Explanation:

You must first observe your data then form a hypothesis.

8 0
4 years ago
Using the equation 2H2+O2 = 2H2I, if 192 g if oxygen reacts completely, how many grams of hydrogen must react with it
dimaraw [331]
I assume there is a typo in the equation.  It is H2O instead of H2I.

The ratio of H2 and O2 that react with each other is 2:1.  To find out the grams of H2, we need to first find out the moles of O2 and H2.

Moles of O2 = mass of O2/molar mass of O2 = 192g/32g/mol = 6 mol.  Therefore, the moles of H2 = 6mol *2 = 12 mol.

So the mass of H2 that reacts with O2 = moles of H2 * molar mass of H2 = 12 mol * 2 g/mol = 24 g

7 0
4 years ago
What is the oxidation number of a group 1a compoubds?
SVETLANKA909090 [29]

Answer:-

+1

Explanation:-

Group 1 A compounds has 1 valence electron.

According to the octet rule, if outermost shell has 8 electrons then it is stable.

So Group 1 A compounds lose 1 electron to fulfill octet.

Oxidation number is the number of electrons lost or gained. It is positive if electrons are lost and negative if electrons are gained.

Hence the oxidation number of group 1 A compounds is +1.

7 0
3 years ago
Why firefighters don't use fire extinguishers?
Leni [432]
Because they want you to get wet 
7 0
3 years ago
Read 2 more answers
Need help fast plzzz!!! Please help.
IRINA_888 [86]

Answer:

1. 0.5333333m (Calculator Soup Work Calculator)

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9. 29.1666666667% efficient

10. 44.5% efficient

Explanation:

will do other answers later

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