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3 years ago

What is true of neutrons?

1 answer:

7 0

Neutron, neutral subatomic particle that is a constituent of every atomic nucleus except ordinary hydrogen. It has no electric charge and a rest mass equal to 1.67493 × 10−27 kg—marginally greater than that of the proton but nearly 1,839 times greater than that of the electron.

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7th grade SCIENCE PLEASE HELP

Flura [38]

Answer: the first one is adaptation, third is migration, 4th is hibernation,

Explanation:

i dont know the other ones, sorry because i am also a 7th grader.

4 0

3 years ago

Solve for Va<br><br>MaVa=MbVb

PolarNik [594]

Answer:

Va = (MbVb)/Ma

Explanation:

Divide both sides by Ma and voila!

8 0

3 years ago

How many grams of barium chloride (BaCl2) are there in 0.187 mol?<br> 0.187 mol

igor_vitrenko [27]

Answer:

38.9 grams of $BaCl_2$

Explanation:

0.187 mol BaCl2 x $\frac{208 g}{1 mol}$

0.187 m x 208 g/m

0.187 x 208 g

38.896 g --> 38.9 g BaCl2

8 0

3 years ago

4. What are the potential sources of error that might cause disagreement between the activity series' prediction of reactions an

nika2105 [10]

Answer:

1. Not to have enough salt water on the foil

2.not cleaning the foil well to remove interfering materials

6 0

3 years ago

57. A recipe for s'mores calls for 2 graham crackers, 2 chocolate pieces and 1 marshmallow. If I

geniusboy [140]

Answer:Noble gases:

are highly reactive.

react only with other gases.

do not appear in the periodic table.

are not very reactive with other elements.

Explanation:Noble gases:

are highly reactive.

react only with other gases.

do not appear in the periodic table.

are not very reactive with other elements.

5 0

2 years ago