Find the volume of an object that has a mass of 20g and density of 184 glcm

Answers

Answer 1

Answer: Volume= Mass/ Density= 20/184
= 0.108 cubic cm

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Are the following physical or chemical changes.1.Lighting a match
2.Cooking waffles
3.Baking a cake

Answers

They are all chemical changes. Think of a chemical change as you can never get something back to the way it was. (A lit match can't be turned back into a new one, waffles can't be turned back into waffle mix, and a cake can't be turned back into cake batter.)

Physical change would be something like slicing cheese or evaporating water. (The sliced cheese is still cheese, and the water turns into steam which can then be turned back into a liquid and it's still water - just in the air.)

chemical reactions because the chemical formula is changed in the reaction

What is the chemical formula for the ionic compound calcium chloride?

Answers

Answer : The correct formula of the given compound will be, $CaCl_2$

Explanation :

Calcium chloride is an ionic compound because calcium element is a metal and chloride element is a non-metal. The bond formed between a metal and a non-metal is always ionic in nature.

The nomenclature of ionic compounds is given by:

1. Positive ion is written first.

2. The negative ion is written next and a suffix is added at the end of the negative ion. The suffix written is '-ide'.

The charge on calcium is (+2) and the the charge on chloride is (-1). The charges are not balanced. Thus they combine and their charges are exchanged and written in simplest whole number ratios to give neutral $CaCl_2$ .

Hence, the formula of the compound calcium chloride will be $CaCl_2$

Refer to the figure showing a pedigree of a family affected by an x-linked recessive disorder. A female in generation 3 isn't a carrier of the disorder. How can this be?A. Females receive X chromosomes from this fathers only, which are unaffected in this case.
B. Females don't have X chromosomes so aren't affected by gene disorders passed on the X chromosome.
C. Females receive an X chromosomes from each point parent, but in cases of recessive disorders, the muted chromosome isn't passed on to daughters.
D. Females receive an X chromosome from each parent. If a mother is a carrier of an X-linked recessive disorder, her daughters have 50 percent chance of receiving her normal X chromosome and a 50 percent chance of receiving her mutated X chromosome.

Answers

Answer:

D. Females receive an X chromosome from each parent. If a mother is a carrier of an X-linked recessive disorder, her daughters have 50 percent chance of receiving her normal X chromosome and a 50 percent chance of receiving her mutated X chromosome.

Explanation:

Females have XX chromosomes as allosomes. They receive one X chromosome from mother and one from father. The female in the III generation received both the healthy X chromosomes from each parent that is why she is not even carrier for the disease.

The modified diagram clearly indicating the genotyope of all the members of the pedigree tree is attached. In the diagram, healthy X chromosome is indicated by X while mutated X chromosome is indicated by doted X. It is clear from the diagram that this female of III generation has XX chromosomes.

The cross for that particular female is shown as under:

Mother Father

ẊX x XY

/ \ / \

ẊX ẊY XX XY

XX are the allosomes of this female child.

Answer: D.

Explanation: Females have XX chromosomes while males have XY

Say no for polythene bags and say yes for paper bags. Comment on this slogan

Answers

Answer:

Yes

Explanation:

Which processes result in the release of carbon? Select three options.Animals break down food molecules to obtain energy.
The remains of producers are broken down by decomposers.
The remains of consumers are broken down by soil decomposers.
Producers take in carbon dioxide.
Producers make sugars and starches.

Answers

The three processes that releasecarbon are as follows:

Animals break down food molecules to obtain energy.

The remains of producers are broken down by decomposers.

The remains of consumers are broken down by soil decomposers.

Carbon moves back and forth from living organisms to the atmosphere in a process summarized by CARBON CYCLE. In the carbon cycle, carbon is either absorbed or released in series of processes.

WAYS THROUGH WHICH CARBON IS RELEASED:

Animals break down food molecules to obtain energy in a process called CELLULAR RESPIRATION. Carbon is released into the atmosphere in form of carbon dioxide (CO2).

The remains of producers (plants) are broken down by decomposers (fungi, bacteria etc). Carbon is returned back to the soil this way.

The remains of consumers, when they die, are broken down by soil decomposers (fungi, bacteria).

Learn more at: brainly.com/question/19494973

Answer:

Animals break down food molecules to obtain energy.

The remains of producers are broken down by decomposers.

The remains of consumers are broken down by soil decomposers.

Explanation:

JUST TOOK THE TEST

How many liters of 0.760 Molar NaOH are needed to completely neutralize 145 mL of 11.33 Molar HCL