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3 years ago

What best describes why a liquid needs a container when a solid does not?

2 answers:

7 0

Because if you have a liquid then you need a glass to keep it together and when it is a solid it is already together so you don't need to do anything

Tanya [424]3 years ago

5 0

Someone deleted my comment XD

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Suppose you put a whole antacid tablet in one glass of water and a crushed antacid tablet in another glass containing the same a

iogann1982 [59]

The crushed tablets would stop bubbling/fuzzing first because it has a smaller surface area which means that it would dissolve before the uncrushed tablets which has a larger surface area.

3 0

2 years ago

Darin skateboarded to the north at 4 m/s. In 5 seconds, he sped up to 7 m/s. What was his acceleration?

Julli [10]

To solve this problem we can use following equation.

v =u + at

Where v is the final velocity (m/s), u is the initial velocity (m/s), a is the acceleration (m/s²) and t is the time taken (s).

v = 7 m/s
u = 4 m/s
a = ?
t = 5 s

By applying the equation, we can get
7 m/s = 4 m/s + a x 5 s
3 m/s = a x 5 s
a = 0.6 m/s²

Hence, the acceleration is 0.6 m/s² towards north.

Answer is "C".

4 0

2 years ago

How many atoms are in four molecules of oxygen gas

Dmitrij [34]

Answer:

8 oxygen atoms

Explanation:

One molecule of oxygen gas has two oxygen atoms (O2). If there are four molecules, then we multiply two by four to get 8 atoms.

8 0

3 years ago

Hydrogen-3 (3h) carbon-14 (14c) oxygen-16 (16o) which isotope(s) would most likely undergo nuclear decay, and why? hint: hydroge

denis23 [38]

The correct answer will be:
<span>carbon-14 and hydrogen-3 would most likely decay because their neutrons and protons are not equal.
Due to atoms tend to decay when it has excess of either protons or neutrons
</span>

8 0

3 years ago

Read 2 more answers

When beryllium ion combines with carbonate ion, the numbers of each ion are??

Katyanochek1 [597]

Answer:

One of each

Explanation:

Be is in Group 2, so it loses its two valence electrons in a reaction to form Be²⁺ ions.

Carbonate ion has the formula CO₃²⁻.

We can use the criss-cross method to work out the formula of beryllium carbonate.

The steps are

Write the symbols of the anion and cation.

Criss-cross the numbers of the charges to become the subscripts of the other ion.

Write the formula with the new subscripts.

Divide the subscripts by their highest common factor.

Omit all subscripts that are 1.

When you use this method with Be²⁺ and CO₃²⁻, you might be tempted to write the formula for the beryllium carbonate as Be₂(CO₃)₂

However, you can divide the subscripts by their largest common factor (2).

This gives you the formula Be₁(CO₃)₁.

We omit subscripts that are 1, so the correct formula is

BeCO₃

There is one Be²⁺ ion and one CO₃²⁻ ion in a formula unit of beryllium carbonate.

4 0

3 years ago