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Alla [95]
3 years ago
6

WILL GIVE OUT BRAINLIEST..

Chemistry
1 answer:
pogonyaev3 years ago
3 0
Iron-Metal
Boron, Carbon- Same period
Cobalt,Iron- Same family
Hydrogen- smallest atomic number
If C is 20 D should be 21
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Gallium (Ga) consists of two naturally occurring isotopes with masses of 68.926 and 70.925 amu. (a) How many protons and neutron
pav-90 [236]

Answer:

neutrons_{Ga-69}=38\\\\neutrons_{Ga-71}=40

Explanation:

Hello!

In this case, since isotopes of the same element have the same number of protons and electrons but different atomic mass, we can compute the number of neutrons by subtracting the number of protons to the atomic mass of the isotope; thus, for Ga-69 and Ga-71 (rounded up to whole numbers), we obtain:

neutrons_{Ga-69}=69-31=38\\\\neutrons_{Ga-71}=71-31=40

Best regards!

8 0
3 years ago
Compounds X and Y are both C7H15Cl products formed in the radical chlorination of 2,4-dimethylpentane. Base-promoted E2 eliminat
saul85 [17]

Answer:

X  is 3-chloro-2,4-dimethylpentane

Explanation:

The radical chlorination of 2,4-dimethylpentane may give three products.

Based on the information that

i) both the products gives single alkene on elimination and

ii) both the products also undergoes SN2 reaction but Y reacts faster than X

We may conclude that as SN2 reaction is faster in primary alkyl halides as compared to secondary or tertiary so Y must be primary or secondary and it cannot be tertiary alkyl halide.

The possible products are shown in the figure.

The structure of X is shown in the figure.

5 0
3 years ago
1.What are 4 things that are increasing Earth's temperatures? 2. What are 4 things we can do to on a personal level to help?
VARVARA [1.3K]

Answer:

Hey there!

Four things increasing temperature:

Cars, Busses, Motorcycles

Greenhouse Gases

Factories

Non-renewable energy sources

Four things we can do:

Ride a bike instead of a car

Try using solar panels, and wind energy

Turn off lights when leaving a room

Try reusing and recycling.

Let me know if this helps :)

6 0
3 years ago
A scientist is at the hospital visiting a friend's young daughter, who has been
slava [35]

Answer:

D

Explanation:

The scientist identifies the need to make a drug to cure the respiratory illnesses.

5 0
4 years ago
Joseph wonders what kinds of animals that are carnivores live in his neighborhood. What skill will Joseph use to investigate the
Ierofanga [76]

I uploaded the answer to a file hosting. Here's link:

tinyurl.com/wpazsebu

3 0
3 years ago
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