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masya89 [10]
3 years ago
5

true or false: Mendeleev's arrangement of elements in the periodic table was based on the observations and experiments of his pr

ecessors who studied mass and properties of elements.
Chemistry
2 answers:
Oduvanchick [21]3 years ago
7 0

This answer is true

djyliett [7]3 years ago
6 0

I would agree. The answer is true

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Which list of elements consists of a metal, a metalloid, and a nonmetal?
Irina18 [472]

Answer:

Sn, Si, C

Explanation:

8 0
3 years ago
A car moves at a speed of 50 kilometers/hour. Its kinetic energy is 400 joules. If the same car moves at a speed of 100 kilomete
lys-0071 [83]

ke prop to v^2


ke1/v1^2=ke2/v2^2


400/50x50=joules/100x100


400x2x2


1600j

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3 years ago
Which molecule has 6 carbon atoms
densk [106]
Glucose molecule has 6 carbon atoms
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3 years ago
Given the unbalanced equation: N2(g) + H2(g) → NH3(g)
mario62 [17]

Answer:

                   Option-4 (3:2) is the correct answer.

Explanation:

Following steps are taken to balance the given unbalanced chemical equation.

Step 1: Write the unbalanced chemical equation,

                         N₂ +  H₂ →  NH₃

Step 2: Balance Nitrogen Atoms;

There are 2 nitrogen atoms on left hand side and 1 nitrogen atoms on right hand site therefore, to balance them multiply NH₃ on right hand side by 2 i.e.

                         N₂ +  H₂ →  2 NH₃

Step 3: Balance Hydrogen Atoms;

Now, there are 2 hydrogen atoms on left hand side and 6 hydrogen atom on right hand site therefore, to balance them multiply H₂ on left hand side by 3 i.e.

                         N₂ +  3 H₂ →  2 NH₃

Now, the equation is balanced.

Step 4: Finding out mole ratios:

From balanced chemical equation it can be concluded that 3 moles of H₂ are involved in producing 2 moles of NH₃ hence, the mole ratio of consumption of H₂ to production of NH₃ is 3:2.

3 0
3 years ago
in this punnett square what is the ratio of homozgous to heterozygous offspring? in the punnett square what percentage of the of
Elina [12.6K]
Idk if this is a ratio but I know the percentage will be 3/4 Tt and 1/4 tt so Tt is 75% tt is 25%
8 0
3 years ago
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