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igomit [66]
3 years ago
5

PLS HELP ASAP I DONT HAVE TIME ONLY 5 MINUTES AND IM DOING OTHER THINGS HELPP

Chemistry
2 answers:
Sauron [17]3 years ago
8 0

Answer:

I've inserted an image.

Explanation:

Hope this helps!

(:

andrezito [222]3 years ago
7 0

Answer:

The reactants of photosynthesis are Carbon Dioxide and water. The products are Glucose (or starch/sugar) and Oxygen. The autotroph uses light energy from the sun in order to complete this process. In the formula, the arrow is the light energy.

Explanation:

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Which of the samples shown represents an element?
belka [17]

Answer:

the 3rd one

Explanation:

3 0
3 years ago
Need help pleas can some body helpe me?​
Pani-rosa [81]

Answer:

they are not liquids at room temperature, so your answer is the last one

Explanation:

5 0
3 years ago
Please help!!!!! The question is in the answer..
elena-s [515]

Answer:-149.7

Explanation:

4 0
3 years ago
Oxidation number of Al(OH)4
Kobotan [32]

Explanation:

The sum of all oxidation numbers in a neutral compound is zero. The sum of all oxidation numbers in a polyatomic (many-atom) ion is equal to the charge on the ion. The oxidation number of oxygen in a compound is usually –2. The oxidation state of hydrogen in a compound is usually +1.

The oxidation state of Al in Al(OH)

4

−

x+4(+1−2)=−1

∴x=+3

The oxidation state of Mn in MnO

2

y+2(−2)=0

∴y=+4

thank u

8 0
3 years ago
How many grams of O2 are needed to react with 18.2 g of NH3?
erastova [34]

Answer:

44 g oxygen are needed.

Explanation:

Given data:

Mass of oxygen needed = ?

Mass of ammonia = 18.2 g

Solution:

Chemical equation:

4NH₃ + 5O₂   →  4NO + 6H₂O

Now we will calculate the number of moles of ammonia:

Number of moles = mass/molar mass

Number of moles = 18.2 g/ 17 g/mol

Number of moles = 1.1 mol

Now we will compare the moles of ammonia with oxygen from balance chemical equation.

                        NH₃              :                O₂

                          4                 :                 5

                          1.1                :              5/4×1.1 = 1.375 mol

Mass of oxygen needed:

Mass = number of moles × molar mass

Mass = 1.375 mol × 32 g/mol

Mass = 44 g

4 0
3 years ago
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