All categories

3 years ago

An element's atoms are exactly the same - no matter where that element is found.

Chemistry

1 answer:

antoniya [11.8K]3 years ago

5 0

Answer:

B. False

Explanation:

All the atoms of an element are not entirely the same no matter where they are found.

The phenomenon of isotopy brings a different perspective to the identity of an element.

Isotopy is the existence of two or more atoms of the same element having the same atomic number but different mass numbers due to the differences in the number of neutrons in their various nuclei.
Isotopes of an element have the same electrons but differ in their masses.
They also differ in their chemical properties.

You might be interested in

What is the pOH of 0.50 molar H3BO3?

Crazy boy [7]

Answer:

A. 10.25

Explanation:

Pkb =4.77

So pka = 14 - pka = 9.23

$Ka =10^{-pka}$

$H_3 BO_3 (aq)+ H_2 O(l) H_2 BO_3^- (aq)+H_3 O^+ (aq)$

Initial 0.50M 0 0

Change -x +x +x

Equilibrium 0.50M-x +x +x

$Ka =\frac {((x)(x))}{(0.50M-x)}$

$5.88\times10^{-10}= \frac {x^2}{(0.50M-x)}$

(-x is neglected) so we get

$5.88\times10^{-10}\times0.50=x^2\\\\x^2=2.94\times10^{-10}$

$x=\sqrt{x^2}=1.72\times10^{-5} M=H^3 O^{+}$

$pH=-log[H^3 O^+]\\\\pH=-log[1.72\times10^{-5}]\\\\pH=4.76$

pOH = 14 - pH

= 14 - 4.76

pOH = 9.24 is the answer

Option A - 10.25 is the answer which is close to 9.24

4 0

3 years ago

Type the correct answer in the box. Spell all words correctly. In which system are both energy and matter exchanged with the sur

Anna11 [10]

Answer:

open system

Explanation:

An open system is a system in which both energy and matter are exchanged with the surroundings.

4 0

3 years ago

Which of the following could be considered a scientific statement? (1 point)

KATRIN_1 [288]

The answer to this question is option B. (I observed that butterflies prefer the yellow flowers.) The others are simply just opinions. Give me brainliest please :)

8 0

4 years ago

Read 2 more answers

Consider the tables below.

brilliants [131]

The right answer is

Table A Organic solvent

No Perfume No Fuel No Anesthetic No Adhesive Yes

6 0

4 years ago

Read 2 more answers

What best describes the goals of scientific investigation and technological development?