a hydrogen-filled balloon was ignited and 1.60g of hydrogen reacted with 12.8g of oxygen. how many grams of water vapor were formed? (assume that water vapor is the only product.)could you help me with this one:) ?

Answers

Answer 1

Answer: 2H2 + O2 ---> 2H2O

1 mole of H2 = 2g
1 mole of O2 = 32g
1 mole of H2O = 18g

according to the reaction:
2*2g H2---------------32g O2
1,6g H2----------------- x g O2
x = 12,8g O2

so reaction is stechiometric

32g O2---------------- 2*18g H2O
12,8g O2 -------------- x
x = 14,4g H2O

answer: 14,4g of water vapour

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What best explains the type of energy present in the vibrating atoms of a substance

Answers

The type of energy present in the vibrating atoms of a substance is a thermal energy and it is a kinetic type of energy. It is associated with movement within the crystal lattice of substance. ... Eventually, it can lead to motion of the atoms which is a form of kinetic energy.

I need somebody to help me with my homework pls i dont get it .

Answers

26. B
27. D
28. C
Hope this helped ☺️

What are abiotic factors of the enviroment lynx

Answers

Abiotic is non-living factors. Such as rocks, soil, and ph.

Answer:

an abiotic factor for a lynx environment would be a water, rocks, and oxygen

Explanation:

abiotic factors are things that are not alive.

hope this helps

What changes igneous or sedimentary rock into metamorphic rock?

Answers

Answer:

The answer is Temperature (Heat), Pressure and chemical activity of fluids.

Explanation:

Metamorphic rocks result from the transformation of pre-existing rocks that have undergone structural and mineralogical changes under certain physical or chemical conditions such as temperature, pressure or chemical activity of the fluids. This type of modification is known as a process called metamorphism, in which igneous rocks or sedimentary rocks, when subjected to high temperatures, pressures or active fluids, cause changes in their composition, bringing new substances to them.

Heat, pressure, or transfer of elements

Based on the reactivities of the elements involved, which reaction will form products that are more stable than the reactants?A.
2AlBr3 + 3Zn → 3ZnBr2 + 2Al
B.
CaBr2 + 2Na → 2NaBr + Ca
C.
MgBr2 + H2 → 2HBr + Mg
D.
BaBr2 + Ca → CaBr2 + Ba
E.
2LiBr + Ba → BaBr2 + 2Li

Answers

Answer : The correct option is, (B)

Explanation :

According to the reactivity series of the elements, a chemical reaction occurs when the most reactive element displace the least reactive element and form more stable products as compared to the reactants.

Option A reaction : $2AlBr_3+3Zn\rightarrow \text{No reaction}$

In this, no reaction will occur because zinc is less reactive metal as compared to aluminium. So, zinc will not displace the aluminium.

Option B reaction : $CaBr_2+2Na\rightarrow 2NaBr+Ca$

In this, the reaction will occur because sodium is more reactive metal as compared to calcium. So, sodium will displace the calcium easily.

Option C reaction : $MgBr_2+H_2\rightarrow \text{No reaction}$

In this, no reaction will occur because hydrogen is less reactive metal as compared to magnesium. So, hydrogen will not displace the magnesium.

Option D reaction : $BaBr_2+Ca\rightarrow \text{No reaction}$

In this, no reaction will occur because calcium is less reactive metal as compared to barium. So, calcium will not displace the barium.

Option E reaction : $2LiBr+Ba\rightarrow \text{No reaction}$

In this, no reaction will occur because barium is less reactive metal as compared to lithium. So, barium will not displace the lithium.

Hence, the option B reaction will form products that are more stable than the reactants.

The reactivity series of the elements are shown below.

Answer:

got it correct

Explanation:

Scientific discoveries are rarely used in technology.

True or False