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3 years ago

What were Lamarck's ideas about evolution and why were those ideas incorrect

Chemistry

2 answers:

Jlenok [28]3 years ago

8 0

What were Lamarck's ideas about evolution and Why were those ideas incorrect?

→ These and other examples show that Lamarck's theory does not explain how life formed and became the way it is. The other way that Lamarck's theory has been proven wrong is the study of genetics. Darwin knew that traits are passed on, but he never understood how they are passed on.

<h3> $#CarryOnLearning$ </h3>

kow [346]3 years ago

4 0

What were Lamarck's ideas about evolution and why were those ideas incorrect

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Which of the following best explains the relationship between molecules and atoms?

DerKrebs [107]

Molecules are the smallest living thing.
Atoms are the smallest thing.
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3 years ago

Label the marrow, spongy bone, and cortical bone on this bone image.

madreJ [45]

Explanation:

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3 years ago

What is important in order for a radioisotope to provide accurate dating

BARSIC [14]

A:The half-life should be similar to the age of the object.

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3 years ago

A _______ is a device used to measure the absorption or release of heat in chemical and physical processes

ser-zykov [4K]

Answer: calorimeter.

A calorimeter is a device used to measure the absorption or release of heat in chemical and physical processes.

Explanation:

The word calor means heat in latin. So, the technique or science to measure the transfered (absorbed or released) heat in a chemical or physical process is called calorimetry and the apparatus (device) used is named calorimeter.

The physical principle on which this science is based is the conservation of energy or first principle of thermodynamic.

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3 years ago

There is a series of nitrogen oxides with the general formula N?O?. What is the empirical formula of one that contains 30.45% ni

lions [1.4K]

Answer: The empirical formula of one that contains 30.45% nitrogen is $NO_{2}$ .

Explanation:

Given: Mass of nitrogen = 30.45 g

Let us assume that the mass of given oxide is 100 grams.

As the atomic mass of nitrogen is 14.0067 g. So, moles of nitrogen will be calculated as follows.

$Moles = \frac{mass}{molarmass}\\= \frac{30.45 g}{14.0067 g/mol}\\= 2.17 mol$

Also, mass of oxygen = (100 - 30.45) g = 69.55 g

Atomic mass of oxygen is 15.9994 g/mol. So, moles of oxygen will be as follows.

$Moles = \frac{mass}{molarmass}\\= \frac{69.55 g}{15.9994 g/mol}\\= 4.34 mol$

The ratio of both the atoms is as follows.

$\frac{4.34}{2.17} = 2$

This means that gas has 2 moles of oxygen to 1 mole of nitrogen. Hence, the formula of oxide is $NO_{2}$ .

Thus, we can conclude that the empirical formula of one that contains 30.45% nitrogen is $NO_{2}$ .

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3 years ago