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professor190 [17]
3 years ago
10

Ok So there is this boy that I like. He is short, he has curly hair, and freckles. He is my brothers best friend. But I don't th

inks he likes me like that. What should I do.
Chemistry
1 answer:
Temka [501]3 years ago
6 0

Answer:

ewewr2qq2we4e2eq2we4e2eq2we4e2eq2we4e2eq2we4e2eq2we4e2eq2we4e2eq2we4e2eq2

Explanation:

asw342253463421q412qq24q2asw342253463421q412qq24q2asw342253463421q412qq24q2asw342253463421q412qq24q2asw342253463421q412qq24q2asw342253463421q412qq24q2asw342253463421q412qq24q2asw342253463421q412qq24q2asw342253463421q412qq24q2asw342253463421q412qq24q2asw342253463421q412qq24q2asw342253463421q412qq24q2asw342253463421q412qq24q2asw342253463421q412qq24q2asw342253463421q412qq24q2asw342253463421q412qq24q2

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This is science
irakobra [83]

Answer:

a= seismic waves I think

b= outer

c= crust I think

6 0
3 years ago
What mass of H2 is needed to react with 8.75 g of O2 according to the following equation: O2(g) + H2(g) → H2O(g)?
alina1380 [7]

Mass of H₂ needed to react with O₂ : 1.092 g

<h3>Further explanation</h3>

The concentration of a substance can be expressed in several quantities such as moles, percent (%) weight / volume,), molarity, molality, parts per million (ppm) or mole fraction. The concentration shows the amount of solute in a unit of the amount of solvent.

Reaction

O₂(g) + 2H₂(g) → 2H₂O(g)

mass of O₂ : 8.75 g

mol O₂(MW=32 g/mol) :

\tt \dfrac{8.75}{32}=0.273

From the equation, mol ratio of O₂ : H₂ = 1 : 2, so mol H₂ :

\tt \dfrac{2}{1}\times 0.273=0.546

Mass H₂ (MW=2 g/mol) :

\tt 0.546\times 2=1.092~g

4 0
3 years ago
Read 2 more answers
Why do you think plant cells need a cell wall as well as a cell membrane?
Sergio039 [100]

Answer:

to protect it from harm

Explanation:

3 0
3 years ago
Which term related to electromagnetism applies only to magnetic force
Sonbull [250]

Answer: option B. Poles

Explanation:

5 0
3 years ago
Methane (CH4), ammonia (NH3), and oxygen (O2) can react to form hydrogen cyanide (HCN) and water according to this equation:
egoroff_w [7]

The grams  of  oxygen that are required  to produce 1  mole  of H₂O  is 16 g ( answer  B)

<u><em> calculation</em></u>

2 CH₄  + 2NH₃ +3 O₂ → 2HCN  + 6H₂O

step 1: use the mole ratio to find moles of O₂

from equation above the  mole ratio  of O₂: H₂O  is 3:6 therefore the moles of O₂  = 1 mole x3/6 =0.5 moles

step  2: find   mass of O₂

mass= moles x molar mass

from periodic table the molar mass  of O₂ = 16 x2= 32 g/mol

mass O₂ = 0.5 moles x 32 g/mol = 16 g (answer B)

6 0
3 years ago
Read 2 more answers
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