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mojhsa [17]
3 years ago
9

How many protons does manganese-55 have

Chemistry
2 answers:
Oksanka [162]3 years ago
5 0

Answer:

25

Explanation:

Naya [18.7K]3 years ago
4 0
I believe Manganese has 25 protons
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My answer would have to be Greed

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3 years ago
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Select all the correct answers.
Archy [21]

Answer:

The natural method of removal of CO2 is

Photosynthesis by plants

Absorption of CO2 from the atmosphere by ocean water

Melting of glacial ice

Explanation:

Respiration of living organism : In this process, Oxygen is consumed(removed) and Carbon dioxide(CO2 ) is formed.So it forms CO2 .

Photosynthesis by plants: Green plant containing. prepare their food in presence of sunlight by using CO2 , water ,Hence CO2 is removed from atmosphere.

Evaporation of ocean water : It increases the level of CO2 in atmosphere. The heating of oceans surface Degassed CO2 to atmosphere.

Absorption of CO2 from the atmosphere by ocean water : the plants under the oceans needs CO2 to carry out photosynthesis .Hence oceans absorbs CO2 from atmosphere .Here, CO2 is removed from atmosphere.

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4 0
3 years ago
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The density of lead (Pb) is 11.34 g/cm3. If I have 2.6 cm3, what mass of lead do I have?
schepotkina [342]

Answer:

The answer is

<h2>29.48 g</h2>

Explanation:

The mass of a substance when given the density and volume can be found by using the formula

<h3>mass = Density × volume</h3>

From the question

volume of lead = 2.6 cm³

density of lead = 11.34 g/cm³

The mass of lead is

mass = 11.34 × 2.6 = 29.484

We have the final answer as

<h3> 29.48 g</h3>

Hope this helps you

6 0
4 years ago
3.50 moles of Ca = ? grams Ca
torisob [31]

Answer:

The mass of 3.5 moles of Ca is 140 g to two significant figures.

Explanation:

6 0
3 years ago
Hello so my question is if some metals can change into a gas can tin and platinum turn into a gas too?
Morgarella [4.7K]

Answer:

Platinum is a greyish-white metal of high lustre, and is very malleable and ductile. It melts in the oxy-hydrogen blowpipe and in the electric furnace; it is harder than gold and is a good conductor of electricity. In finely divided form it has the ability to absorb or occlude gases

3 0
4 years ago
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