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kiruha [24]
3 years ago
7

Which of these contain a single long dna molecule? A)gene B)Nucleotide C)chromosone D)Deoxyribose

Chemistry
1 answer:
White raven [17]3 years ago
5 0
C, a chromosome! ;)))
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Grams smallest to kilograms and milligrams
Anna007 [38]
Grams is smaller than kilograms but larger than milligrams

1g = 0.001 kg
1g = 1000 mg

Grams is an SI unit for mass.

International System of Units (SI Units) are organized body of measurements for physical quantity. They are set to be the norm or global norm scaling for every physical quantity which includes kilogram, meter, second, ampere, kelvin, candela and mole. These measurements then can increase or decrease by the power of ten, multiplied or divided. As said and explained, the SI is helpful in describing objects because 
<span>1.       They give us the idea of how much matter is contained in that single substance or the current state the matter is in or how hot or cold. We measure and can quantify the quality of the specific matter.</span> <span><span>
2.       </span>SI Units are a global set of measurement hence, we can communicate with ease from western to eastern countries with these measurements without having problems in terms of portraying or displaying a set of physical quantities.</span><span> </span>

4 0
3 years ago
A 4.000 g sample of an unknown metal, M, was completely burned in excess O2 to yield 0.02225 mol of the metal oxide, M2O3. What
Solnce55 [7]
4X + 3O₂ = 2X₂O₃

n(X₂O₃)=0.02225 mol
m(X)=4.000 g
x - the molar mass of metal

m(X)/4x=n(X₂O₃)/2

x=m(X)/{2n(X₂O₃)}

x=4.000/{2*0.02225)=89.89 g/mol

X=Y (yttrium)



7 0
4 years ago
A sample of ethanol (C2H6O) has a mass of 0.2301 g. Complete combustion of this sample causes the temperature of a bomb calorime
Keith_Richards [23]

Answer:  4.994\times 10^{-3}  moles

Explanation:

According to avogadro's law, 1 mole of every substance weighs equal to molecular mass , occupies 22.4 L at STP and contains avogadro's number 6.023\times 10^{23} of particles.

To calculate the moles, we use the equation:

\text{Number of moles}=\frac{\text{Given mass}}{\text {Molar mass}}

Given mass of ethanol = 0.2301

Molar mass of ethanol = 46.07 g/mol

\text{Number of moles of ethanol}=\frac{0.2301g}{46.07g/mol}=4.994\times 10^{-3}

Thus there are 4.994\times 10^{-3}  moles of ethanol are present in the sample.

7 0
4 years ago
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What do you call the meetings of two planets/objects as seen from the earth? hurrry ASAP!!!!!
RoseWind [281]

Answer:

It's called "Great conjunction"

6 0
3 years ago
What is measurement?<br>​
Alexus [3.1K]

Measurement is a process of finding a number that shows the amount of something.

Brainliest? Thanks!

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