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Svetllana [295]
3 years ago
7

Please help me Thank you

Chemistry
1 answer:
Mamont248 [21]3 years ago
6 0

Answer:

A

Explanation:

A is the answer because it is explaining how wolves are ancestors of dogs

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What is the chemical equation for a reaction between copper (ll carbonate and heat?
tino4ka555 [31]
Copper (II) Carbonate + Heat yields copper (II) oxide and carbon dioxide
Molecular Equation: CuCo3 + heat > CuO + CO2
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6. if a cross country runner travels at a speed of 10 mph and he runs for 2 hours, how many miles will he have run at the end of
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Explanation:

distance = speed x time

distance = 10 x 2

distance = 20miles

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2 years ago
use the heisenberg uncertainty principle to calculate the uncertainity in meters in the position of 0.68g and traveling at a vel
My name is Ann [436]

Answer:

7.7439×10⁻³¹ m

Explanation:

The expression for Heisenberg uncertainty principle is:

\Delta x\times \Delta v=\frac {h}{4\times \pi\times m}

Where m is the mass of the microscopic particle

h is the Planks constant

Δx is the uncertainty in the position

Δv is the uncertainty in the velocity

Given:

mass = 0.68 g = 0.68×10⁻³ kg

Δv = 0.1 m/s

Δx= ?

Applying the above formula as:

\Delta x\times 0.1=\frac {6.62\times 10^{-34}}{4\times \frac {22}{7}\times 0.68\times 10^{-3}}

<u>Δx = 7.7439×10⁻³¹ m</u>

8 0
3 years ago
Place the events in order as the temperature of a gas in a container slowly increases . I will reward brainliest
Tamiku [17]
2, 3, 1, 5, 4.. i believe

7 0
3 years ago
Read 2 more answers
Harry stores toxic chemical waste in a large steel tank that has only 15% of its volume underground. Jena lives in the wildernes
Anvisha [2.4K]

Answer:

Only Harry and Jena

Explanation:

Under federal regulations, an UST is any one or a combination of tanks such that the volume of an accumulation of regulated substances is 10% or more beneath the surface of the ground.

Any UST system holding a mixture of hazardous waste and other regulated substances are also are not covered by federal regulations regarding USTs.

Farm or residential tank of capacity more than 11 gallons used for storing motor fuel is covered by federal regulations regarding USTs.

According to the given question,

Only Harry and Jena are covered by federal regulations regarding USTs.

7 0
3 years ago
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