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Mazyrski [523]
3 years ago
13

On a periodic table, element names are represented by:

Chemistry
1 answer:
alina1380 [7]3 years ago
4 0

Answer: Symbols

Explanation:

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SOMEONE PLEASE HELP! WILL GIVE BRAINLIEST!
Elis [28]

Answer:

1 At 0C° KNO3 is least soluble

2 Approximately 65 grams

3 About 30 grams

4 yes it increases at the same rate can be explained by straight line graph

Explanation:

3 0
2 years ago
Why are scientists concerned with finding Earth-like planets?
sdas [7]
Over the last few days, NASA has been getting everybody excited with its plans to hold a high profile briefing about a discovery beyond our solar system. Now we know that the announcement concerns the discovery of seven planets orbiting a star elsewhere in our galaxy<span>.  hope this helps</span>
5 0
3 years ago
Read 2 more answers
How many atoms are in one molecule of Iron II sulfate
dezoksy [38]
Answer:
             The number of atoms contained by one molecule of Iron (II) Sulfate are 6.

Explanation:
                   Iron (II) Sulfate is mage up of two parts. One is the Positive part which constitutes of Fe⁺² and a negative part which constitutes of a polyatomic anion i.e. SO₄²⁻. As there are four Oxygen and one sulfur atom in sulfate Ion so sulfate ion contains 5 atoms in total. Therefore, five atoms from sulfate iona dn one atom of Iron ion makes a total of 6 atoms in one molecule of Iron (II) Sulfate.
5 0
3 years ago
Calculate the kinetic energy of a truck that has a mass of 2900 kg and is moving at 15 ms
avanturin [10]

Answer:

<h2>326,250 J</h2>

Explanation:

The kinetic energy of an object can be found by using the formula

k =  \frac{1}{2} m {v}^{2}  \\

m is the mass

v is the velocity

From the question we have

k =  \frac{1}{2}  \times 2900 \times  {15}^{2}  \\  = 1450 \times 225 \\  = 326250

We have the final answer as

<h3>326,250 J</h3>

Hope this helps you

8 0
3 years ago
(they don't have science so I guess cemastry will do.)
DedPeter [7]

warm air rises because of convection.

A student holds the back of his hand near an iron to see if it's hot. The heat transfer is conduction.

Warm water moves throughout a mattress because of ... why is there warm water in a mattress again? Convection, I guess.

In a swimming pool, the water near the surface is warmer because of convection and solar radiation; it's closer to the Sun than the bottom of the pool, so it receives more thermal radiation, making it warmer.

7 0
3 years ago
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