3 years ago

What elements are in hay

Chemistry

2 answers:

Ivenika [448]3 years ago

4 0

I looked it up for u

notka56 [123]3 years ago

3 0

I hope that this helps

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Is Italian salad dressing a pure substance or a mixture ?

Evgen [1.6K]

Answer:mixture

Explanation:

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3 years ago

Green plants absorb sunlight to power photosynthesis, the chemical synthesis of food from water and carbon dioxide. The compound

Kamila [148]

Answer:

$698 \ THz$

Explanation:

Data provided as per the question below:-

Wavelength = 430.nm

The computation of the frequency of the light is shown below:-

Frequency = Velocity of light ÷ Wavelength

The Velocity of light = $= {3.0 \times 10^8 \ m/s}$

Wavelength = 430 nm = $4.30 \times 10^-^7$ m

Frequency = $\frac{3.0 \times 10^8 \ m/s}{4.30 \times 10^-^7}$

$= 6.98 \times 10^1^4 \ hz$

$= 6.98 \times 10^2 \ Thz$

= $698 \ THz$

Therefore for determining the frequency we simply applied the above formula.

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2 years ago

N2H4+H2O2 ——> N2+H2O coefficient

const2013 [10]

Answer:

N2H4 + 2H2O2 ---->N2 + 4H2O

Explanation:

N=2 N=2

H=6 ->8 H=2 ->8

O=2 -> 4 O=1 -> 4

Add coefficients to hydrogen peroxide on the left and water on the right, so that there is an equal number of hydrogens and oxygens.

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2 years ago

PLEASE ANSWER

zhuklara [117]

D) light is reflecting in the direction indicated by T.

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How could Mendeleev predict the properties of elements that had not yet been discovered?

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It was the element of aluminium where they predict their properties <span />

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