2 years ago

Weight is the downward pull of __________ on mass. What one word completes the sentence?

Chemistry

1 answer:

Andrews [41]2 years ago

5 0

Answer:

Gravity

Correct me, if I am wrong :)

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Does it require more energy to melt an ionic compound or dissolve it in water? It requires much more energy to melt it. It takes

Dmitrij [34]

Melting, due to the strong forces provided by lattice energy framework, would require more energy

6 0

3 years ago

17. Scientists analyzed data about Vesuvius in the same way that a zoologist a specimen.

Dima020 [189]

Answer:

hii there

The correct answer is option ( B )

Explanation:

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7 0

3 years ago

How many moles of ammonium sulfate can be from the reaction of 30.0 mol of NH3 with H2SO4 according to the following equation: 2

marysya [2.9K]

Answer:

15 moles of ammonium sulfate would be formed from 30 moles of ammonia.

Explanation:

Given data:

Number of moles of ammonium sulfate formed = ?

Number of moles of ammonia = 30.0 mol

Solution:

Chemical equation:

2NH₃ + H₂SO₄ → (NH₄)₂SO₄

Now we will compare the moles of ammonium sulfate with ammonia.

NH₃ : (NH₄)₂SO₄

2 : 1

30.0 : 1/2×30.0 = 15.0 mol

So 15 moles of ammonium sulfate would be formed from 30 moles of ammonia.

7 0

3 years ago

How many molecules of sodium oxide will be created if 275 grams of sodium reacts with excess oxygen? Given the equation: 4Na + O

ollegr [7]

Answer:

3.60 x 10^24 molecules Na2O

Explanation:

4 0

4 years ago

1.20×10−8s to nanoseconds

AveGali [126]

Answer:

There are 12 nanoseconds in $1.2\times 10^{-8}\ s$ .

Explanation:

We need to convert $1.2\times 10^{-8}\ s$ to nanoseconds.

We know that,

$1\ s=10^9\ ns$

Now using unitary method to solve it such that,

$1.2\times 10^{-8}\ s=1.2\times 10^{-8}\ \times 10^9\\\\=1.2\times 10\\\\=12\ ns$

So, there are 12 nanoseconds in $1.2\times 10^{-8}\ s$ .

7 0

3 years ago