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murzikaleks [220]
2 years ago
14

The periodic table... old help me is a test..​

Chemistry
1 answer:
Tom [10]2 years ago
5 0
Need more information
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Need help read the comment below.
BartSMP [9]

Answer:

Protective fruit

Explanation:

Angiosperm seeds grow in the middle of flower's ovaries and are covered by a defensive fruit.

8 0
2 years ago
How high did Joseph Kittinger get up into the atmosphere before he jumped?
Trava [24]
I know the answers I do
8 0
2 years ago
Read 2 more answers
A 500-ml glass beaker is filled to the brim with ethyl alcohol at a temperature of 5. 00ºc. how much will overflow when its temp
Setler [38]

The volume of ethyl alcohol overflow will be 9.265mL.

To calculate the volume of ethyl alcohol overflow, we will use

∆V=V(á∆T)

Where,

∆V=volume expand

á=volumetric expansion Coefficients =0.00109/°C

V=initial volume =500ml

T'=final temp. =22°C

T=initial temp=5°C

Now,

∆V=500×(0.00109/°C) ×(22-5)

=500×(0.00109) (17)

=9.265ml

Thus, we find that the volume of ethyl alcohol overflow will be 9.265 mL.

learn more about ethyl alcohol:

brainly.com/question/11237501

#SPJ4

5 0
1 year ago
Pb (NO3)2 (aq)+KCl (aq) Express answer as a chemical equation enter if reaction if no reaction occurs identify all phases
enot [183]

Answer:

Pb (NO₃)₂(aq) + 2KCl(aq)     →   2KNO₃(aq)    +  PbCl₂(s)

Explanation:

In given chemical equation the aqueous lead (II) nitrate react with aqueous potassium chloride and form aqueous potassium nitrate and lead chloride.

Chemical equation:

Pb (NO₃)₂(aq) + KCl(aq)     →   KNO₃(aq)    +  PbCl₂(s)

Balanced chemical equation:

Pb (NO₃)₂(aq) + 2KCl(aq)     →   2KNO₃(aq)    +  PbCl₂(s)

ionic equation:

Pb²⁺ (aq) + 2NO₃⁻ (aq) + 2K⁺(aq)  +  2Cl⁻ (aq)    →     2NO₃⁻(aq)  + 2K⁺(aq)  +  PbCl₂(s)

Net ionic equation:

Pb²⁺ (aq) +  2Cl⁻ (aq)    →   PbCl₂(s)

The NO₃⁻(aq) and  K⁺(aq) are spectator ions that's why these are not written in net ionic equation. The PbCl₂ can not be splitted into ions because it is present in solid form.

Spectator ions:

These ions are same in both side of chemical reaction. These ions are cancel out. Their presence can not effect the equilibrium of reaction that's why these ions are omitted in net ionic equation.  

8 0
2 years ago
Electrons have been shown to have both wavelike and particle-like properties. (4 points)
Alex

Answer:

True

Explanation:

Because electrons go in different paths they can be a wavy type of path and they have particle like properties too because they are small and then they can be in string like forms too.

4 0
3 years ago
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