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3 years ago

When metals form ions, they tend to do so by what

2 answers:

8 0

Metals need to give away atoms. Therefore, they tend to give away atoms and become positively charged ions. They're called 'cations' when they become positive.

In-s [12.5K]3 years ago

5 0

Losing electrons and forming positive ions

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Two angles with measures (6x + 60) (90)<br> are supplementary. What is the value of x?

fredd [130]

Supplementary angles add up to 180, so
6x+60+90 = 180 and solve for x
6x= 30
x=5

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4 years ago

Read 2 more answers

What is the mass of oxygen that can be produced from 2.79 moles of lead(ll) nitrate

denis23 [38]

1.38 moles of oxygen

Explanation:

Thermal decomposition of Lead (II) nitrate is shown by the balanced equation below;

2Pb(NO₃)₂ → 2PbO + 4NO₂ + O₂

The mole ration of Lead (II) nitrate to oxygen is 2: 1

Therefore 2.76 moles of Lead (II) nitrate will lead to production of? moles of oxygen;

2: 1

2.76: x

Cross-multiply;

2x = 2.76 * 1

x = 2.76 / 2

x = 1.38

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3 years ago

Part 1: Describe the mass and surface temperature of the supergiant stars.

Julli [10]

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blue super giant surface temperature is 20,000 to 50,000 degree Celsius example :0 Rigel its mass is around 20 times the sun mass it give light which 60,000 sun together give .
part 2 :- HR diagram : hertzsprung -Russel diagram ( attached below)

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3 years ago

Surface tension ________________________.

Alex73 [517]

C) is higher for nonpolar substances than for polar ones

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3 years ago

A solution at 25 degrees Celslus 1.0*10^ -5 MH 3 O^ + . What the concentration of OH^ - in this solution?

dexar [7]

Answer:

Explanation:

-log(1.0x10^-5) = pH

pH + pOH = 14 (rearrange it)

OH- = 10^-pOH = 1.0 x 10^-9

- Hope that helped! Let me know if you need further explantion.

7 0

3 years ago