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4 years ago

Mantle made blank to determine if certain trait forms and their alleles were inherited together

Chemistry

1 answer:

luda_lava [24]4 years ago

3 0

Mendel made dihybrid crosses to determine if certain trait forms and their alleles were inherited together

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What mass of zinc oxide would be produced by the thermal decomposition of 375 grams of zinc carbonate? znco3 -> zno co2

Nimfa-mama [501]

243 grams of zinc oxide would be produced by the thermal decomposition of 375 grams of zinc carbonate.

<h3>What is Thermal Decomposition?</h3>

Heat causes one component to break down into two or more other substances in a process known as thermal decomposition. The heat is used to dissociate the bonds that held the original molecules' atoms together, hence the reaction often uses up more heat energy than it produces.

According to the periodic table:

zinc molar mass is 65.38 grams

12 gm is the molar mass of carbon

oxygen molar mass is 16 grams

ZnCO3 molar mass is 65.38 + 12.3 + 16.4 = 125.38 gm.

ZnO has a molar mass of 65.38 + 16 = 81.38 grams.

Therefore, the mass of ZnO in 375 gm is equal to (375 x 81.38) / 125.38, or 243.4 gm.

To learn more about Thermal Decomposition visit:

brainly.com/question/465533

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1 year ago

A student wishes to prepare 300-mL of a 0.180 M potassium bromide solution using solid potassium bromide, a 300-mL volumetric fl

givi [52]

Answer:

a) 6.426 grams of potassium bromide student must weigh.

b) The correct answer is option a.

Explanation:

$Concentration(C)=\frac{Moles(n)}{Volume (L)}$

a) Concentration of potassium bromide = c = 0.180 M

Moles of potassium bromide = n

Volume of the potassium bromide solution = 300 mL = 0.3 L

$0.180 M=\frac{n}{0.3 L}$

$n=0.180 M\times 0.3 L=0.054 mol$

Mass of 0.054 moles of potassium bromide :

= $0.054 mol\times 119 g/mol=6.426 g$

6.426 grams of potassium bromide student must weigh.

b) Drying of flask in drying oven. This is because solution will be prepared by adding water after adding solute. So drying the flask will be not required.

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4 years ago

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What does " a man's home is his castle " mean

slega [8]

It means that someone's home is more than just a home to someone much more meaningful and precious like a castle

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4 years ago

Is it possible for parents whose alleles for a dominant trait are homozygous dominant to have offspring with a homozygous recess

Fynjy0 [20]

The right answer for the question that is being asked and shown above is that: "TRUE." It is <span>possible for parents whose alleles for a dominant trait are homozygous dominant to have offspring with a homozygous recessive trait. This is true.</span>

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4 years ago

Nail polish remover containing acetone was spilled in a room 7.2 m × 5.8 m × 3.9 m. Measurements indicated that 6,400 mg of acet

sergeinik [125]

Volume of room = $7.2 m \times 5.8 m \times 3.9 m$