isotopes are atoms that contain the same number of protons but a different number of neutrons in their nuclei. based on this information, which statement about isotopes is true? a. isotopes are atoms of the same element. b. isotopes are atoms that have the same mass number. c. isotopes are atoms of different elements that have similar chemical and physical properties. d. isotopes are atoms of different elements that belong to the same family on the periodic table.

Answers

Answer 1

Answer: c)Chemical properties of elements are primarily determined by the electrons but not by the neutrons. Therefore, the Isotopes of the same element have similar chemical behavior.

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How are science and technology related?A. Technology is a branch of natural science.
B. Science is a branch of technology.
C. Advances in science may lead to advances in technology and vice versa.
D. Science and technology are not related

Answers

It's not A because technology is a branch of applied science. It's not B because again, technology is a branch of science, not the other way around. It's not D because they are related with one being a branch of another. Therefore, it has to be C because scientific advances do lead to technological advances.

C. Advances in science may lead to advances in technology and vice versa is the correct answer~

How many moles of magnesium is 3.01 x 10^22 atoms of magnesium?

Answers

Moles are the base unit of atoms, molecules, ions, or any other substance. It is exactly 6.022 × 10²³ entities of any substance. The mole is equal to the ratio of the given mass to the molar mass.

Given that:

Magnesium atoms = $3.01 * 10^(22 )$

1 mole of a substance = $6.022 * 10^(22 )$

Now, calculating the moles of magnesium in the given entity:

Mole = $3.01 * 10^(22)* \frac{1 \text {mol}}{6.022 * 10 ^(22)}$

Mole = 0.05 moles.

Thus, the moles are defined as the base unit of any substance. It was discovered by the scientist Avogadro and is also known as Avogadro's number ( $6.022 * 10^(22 )$ ).

Therefore, the mole in $3.01 * 10^(22 )$ atoms of Magnesium will be 0.05.

To know more about moles, refer to the following link:

brainly.com/question/20674302

3.01 x 10^22 x 1 mol/avagadro's number = 5e + 44 boy-o. and music does rock.

What volume measured in stp will 3.75 grams of helium gas occupy?

Answers

1 mole of any gas will occupy 24dm^3 or 24000cm^3 as one mole of helium weighs 4g it will occupy just under 24000cm^3

What is the percent composition by mass of hydrogen in NH4HCO3 (gram-formula mass = 79 grams/mole)?

Answers

Answer:The percent composition by mass of hydrogen in $NH_4HCO_3$ is 6.32 %.

Explanation:

Molecular mass of the $NH_4HCO_3$ = 79 g/mol

Mass of the hydrogen atom present in one formula unit of $NH_4HCO_3$ :

$= 5* \text{(atomic mass of hydrogen)}=5* 1 g/mol= 5 g/mol}$

$\text{percentage of hydrogen}=\frac{\text{mass of the hydrogen in}NH_4HCO_3}{\text{molar mass of}NH_4HCO_3}* 100$

$\text{percentage of hydrogen}=(5g/mol)/(79 g/mol)* 100=6.32\%$

The percent composition by mass of hydrogen in $NH_4HCO_3$ is 6.32 %.

Answers: 6.3%

Explanation:

Why does it make sense that if an atom loses electrons, it is left with a pisitive charage?

Answers

Because atoms are neutral. By neutral, I mean that; there are three main particles that make up an atom. Protons, Electrons and Neutrons. Protons have (electrically) positive charge, electrons have negative and neutrons are electrically neutral. One proton's charge is +1 and one electron's charge is -1. An atom (normally) has the same amount of protons and electrons. Let's say if an atom has two protons and two electrons, the sum of electrical charges of the protons is (two times +1) +2 and sum of electrical charge of electrons is (two times -1) -2 . The total charge of the atom is the sum these. So, (-2)+(2)= 0. That makes the charge of the atom 0, thus makes it neutral. But let's say this atom loses one of its electrons, and now has only one. So one electron (-1) and two protons (+2) in total will be : (-1)+(2) = +1 . +1 is positive, so this makes the charge of the atom positive.

Electrons have a net negative charge, therefore by losing them the atom will become slightly more positive.

What is the volume of an object whose dimensions are 5.54 cm, 10.6 cm, and 199 cm?

Answers

Volume:

a x b x c

Therefore:

5.54 x 10.6 cm x 199 => 11,686.076 cm³

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