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2 years ago

Nickel has 28 protons if it has 31 neutrons, what is it’s atomic mass?

Chemistry

1 answer:

zaharov [31]2 years ago

6 0

D) 59 (protons+neutrons=mass)

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As the moon orbits the ______________, its gravitational pull is______________ on the side of the earth closest to the _________

Fynjy0 [20]

Answer:

Earth

Strongest

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Gravitational

Tide

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2 years ago

19) Which set of coefficients correctly balances this chemical equation?*

Bas_tet [7]

Answer:

6,1,2

Explanation:

_Ag + _N2 => _Ag3N

LHS RHS

Ag=1×6=3 Ag=3×2=6(Balanced)

N=2×1=2 N=1×2=2(Balanced)

coefficient=6,1,2

4 0

2 years ago

How many hydrogen atoms are there in the molecule H2SO?

sergiy2304 [10]

Answer:

D:2

Explanation:

H is hydrogen, and the subscript represents the amount of atoms it has so H2SO is two hydrogens

3 0

2 years ago

Read 2 more answers

HELP PLZ ASAP I NEED IT and no links plz ANd Plz HURRRRRy

mars1129 [50]

Answer: The balanced chemical equation is $2KClO_3(s)\rightarrow 2KCl(s)+3O_2(g)$

Explanation:

A balanced chemical equation is one where all the individual atoms are equal on both sides of the reaction. It follows the law of conservation of mass.

For the given unbalanced chemical equation:

$KClO_3(s)\rightarrow KCl(s)+O_2(g)$

On the reactant side:

Atoms of K = 1

Atoms of Cl = 1

Atoms of O = 3

On the product side:

Atoms of K = 1

Atoms of Cl = 1

Atoms of O = 2

To balance the equation, we must balance the atoms by adding 2 infront of both $KClO_3(s)$ and $KCl(s)$ . Also, a coefficient of 3 must be written infront of $O_2(g)$

For the balanced chemical equation:

$2KClO_3(s)\rightarrow 2KCl(s)+3O_2(g)$

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2 years ago

The use of more advanced tools made of stone, wood, and bone, such as the ones illustrated below, was typical of which period of

Sedbober [7]

Paleolithic Era
During the Paleolithic Era, early humans used mostly stone tools but at times also used wood or bone tools.

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2 years ago