I NEED HELP ASAP PLEASE

Chemistry

1 answer:

scZoUnD [109]2 years ago

8 0

I think it’d be C. I’m not 100% if it is tho

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Given the formula for a compound:

Llana [10]

I believe the correct answer is Butanone.

8 0

2 years ago

Radioactive gold-198 is used in the diagnosis of liver problems. the half-life of this isotope is 2.7 days. if you begin with a

Neporo4naja [7]

Answer:

See explanation below

Explanation:

To solve this problem, we need to use the expression of half life decay of concentration (or mass) which is the following:

m = m₀e^-kt (1)

In this case, k will be the constant rate of this element. This is calculated using the following expression:

k = ln2/t₁/₂ (2)

Let's calculate the value of k first:

k = ln2/2.7 = 0.2567 d⁻¹

Now, we can use the expression (1) to calculate the remaining mass:

m = 8.1 * e^(-0.2567 * 2.6)

m = 8.1 * e^(-0.6674)

m = 8.1 * 0.51303

m = 4.16 mg remaining

6 0

3 years ago

A researcher discovers a new bacterium that lives on the seafloor near hydrothermal vents. This organism reduces CO2 to form C6H

KonstantinChe [14]

Answer:

C. Chemoautotroph

Explanation:

The new bacterium are able to create their own energy and biological materials (glucose) from inorganic chemicals (CO2 and H2), therefore they are called chemoautotroph.

5 0

3 years ago

Please help i dont understand it

Setler [38]

Answer:- solution boiling point = 102.23 degree C (102 degree C with three sig figs).

Solution:- When a non volatile solute is added to a solvent then boiling point increases. Elevation in boiling point is directly proportional to the molality of the solution.

The equation is:

$\Delta T_b=i*k_b*m$