All categories

3 years ago

Which statement about Fe is supported by the modern atomic theory but not John Dalton’s theory?

Chemistry

2 answers:

lana66690 [7]3 years ago

5 0

Answer:

The correct option is B

Explanation:

One of the claims of John Dalton's atomic theory is that atom is the smallest unit of matter (which suggests that there are no particles smaller than an atom in any matter). This claim has been disproved by the modern atomic theory which established that there are particles smaller than atom (called subatomic particles). These particles are electrons, protons and neutrons.

One of the modern atomic theory was by Neils Bohr, who proposed that <u>electrons move in circular orbits around the central nucleus</u>. Thus, the electrons of iron can also be said to be present in a region of space (circular path) around the nucleus. This proves that option B is the correct option as John Dalton's theory did not even recognize the electron(s) nor the nucleus.

Strike441 [17]3 years ago

5 0

Answer:

Explanation:

You might be interested in

Drawing a conclusion derived from knowledge of an established principle is called _____. inductive reasoning abductive reasoning

san4es73 [151]

a.)Inductive Reasoning

is the answer

5 0

3 years ago

Read 2 more answers

Can anybody check my answer?

anzhelika [568]

Answer:

$\boxed{\text{25. 20 L; 26. 49 K}}$

Explanation:

25. Boyle's Law

The temperature and amount of gas are constant, so we can use Boyle’s Law.

$p_{1}V_{1} = p_{2}V_{2}$

Data:

$\begin{array}{rcrrcl}p_{1}& =& \text{100 kPa}\qquad & V_{1} &= & \text{10.00 L} \\p_{2}& =& \text{50 kPa}\qquad & V_{2} &= & ?\\\end{array}$

Calculations:

$\begin{array}{rcl}100 \times 10.00 & =& 50V_{2}\\1000 & = & 50V_{2}\\V_{2} & = &\textbf{20 L}\\\end{array}\\\text{The new volume will be } \boxed{\textbf{20 L}}$

26. Ideal Gas Law

We have p, V and n, so we can use the Ideal Gas Law to calculate the volume.

pV = nRT

Data:

p = 101.3 kPa

V = 20 L

n = 5 mol

R = 8.314 kPa·L·K⁻¹mol⁻¹

Calculation:

101.3 × 20 = 5 × 8.314 × T

2026 = 41.57T

$T = \dfrac{2026}{41.57} = \textbf{49 K}\\\\\text{The Kelvin temperature is }\boxed{\textbf{49 K}}$

6 0

4 years ago

sweet-ann [11.9K]

Answer:lmk when u have the answer

Explanation:

6 0

3 years ago

Describe the two methods of active transport

dimaraw [331]

Endocytosis
Process by which the cell surrounds and takes particles into the cell

Exocytosis
Secretion of material out of the plasma membrane

4 0

4 years ago

Read 2 more answers

Increasing temperature can: change the phase of matter increase the number of protons add neutrons to the nucleus of an atom dec

alexdok [17]

It can change the phase of matter. The rest of the answers are chemical changes but increasing temperature indices a physical change which is only found in the first choice

4 0

4 years ago