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3 years ago

What is part of every cell

Chemistry

2 answers:

Elan Coil [88]3 years ago

4 0

The parts are plasma membrane, DNA, Cytoplasm, and Ribosomes.

Charra [1.4K]3 years ago

3 0

Cytoplasm is an organelle in every cell on earth.

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If I touch a hot object, my hand gets hot through which type of heat transfer?

mamaluj [8]

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Thermal Transfer.

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Which molecule in plants cells first captures the radiant energy from sunlight?

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3 years ago

Hunter wants to measure the weight of a dumbbell.he should

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He should use a scale and record the weight in N. The beaker is used for liquid measurement and the scale is used for measuring sold things. A dumbbell is not a liquid material that is why the need of the scale will give it the accurate measurement that Hunter wants to know.

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3 years ago

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(b) difference between metalloids and alloys

blsea [12.9K]

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Metalloid -

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3 years ago

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What is the empirical formula for a compound that contains 10.89% magnesium 31.77% chloride and 57.34% oxygen

Blizzard [7]

Answer: $Mg_{1}Cl_{2}O_{8}$

Explanation:

If percentage are given then we are taking total mass is 100 grams.So, the mass of each element is equal to the percentage given.

Mass of Mg = 10.89 g

Mass of Cl = 31.77 g

Mass of O = 57.34 g

Step 1 : convert given masses into moles.

Moles of Mg= $\frac {\text{ given mass of Mg}}{\text{ molar mass of Mg}}= \frac {10.89g}{24g/mole}=0.45moles$

Moles of Cl = $\frac {\text{ given mass of Cl}}{\text{ molar mass of Cl}}= \frac {31.77g}{35.5g/mole}=0.89moles$

Moles of O = $\frac {\text{ given mass of O}}{\text{ molar mass of O}}=\frac {57.34g}{16g/mole}=3.58moles$

Step 2 : For the mole ratio, divide each value of moles by the smallest number of moles calculated.

For Mg = $\frac {0.45}{0.45}=1$

For Cl = $\frac {0.89}{0.45}=2$

For O= $\frac {3.58}{0.45}=8$

The ratio of Mg :Cl : O= 1 : 2 : 8

Hence the empirical formula is $Mg_{1}Cl_{2}O_{8}$

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3 years ago