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3 years ago

Kelvin is the SI unit of temperature true or false

Chemistry

2 answers:

Maslowich3 years ago

8 0

Answer:

false

Explanation:

kelvin is not referred to or written as a degree. The kelvin is the primary unit of temperature measurement in the physical sciences, but is often used in conjunction with the degree Celsius, which has the same magnitude.

Delicious77 [7]3 years ago

3 0

Answer and Explanation:

$Yes, Kelvin~is~the~SI~unit~of~temperature.~Not~Celsius~or~degrees~$ $Fahrenheit.~Si~the~answer~for~your~question~is~``True"$

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Usually , it takes very little time for a community to develop during primary succession False True

Arte-miy333 [17]

False! Primary succession is when a community has to completely start over which takes a long time.

6 0

3 years ago

Consider a mixture of soil and water and compare it to a colloid, such as milk. Which property best differentiates these two mix

mezya [45]

There are many differentiates between them. Like if you standing these two mixture, the soil and water will separate while milk will not. And colloid have tyndall effect while soil and water doesn't have.

7 0

3 years ago

Balance the equation ___ CaCO3 -> ____ CaO + ____ CO2

Degger [83]

Answer:

CaCO3 -> CaO + CO2

Explanation:

Woahhhh, did you balance it yourself just then?

3 0

3 years ago

How many grams of a 14.0% (w/w) sugar solution contain 62.5<br> of sugar?

Delicious77 [7]

Answer:

$m_{solution}=446.4g$

Explanation:

Hello,

In this case, by-mass percent is computed in terms of the mass of the solute and the mass of the solvent as shown below:

$\% m=\frac{m_{solute}}{m_{solution}} *100\%$

Thus, solving for the mass of the solution, we obtain:

$\frac{x}{y} m_{solution}=\frac{m_{solute}}{\% m}*100\%\\ \\m_{solution}=\frac{62.5g}{14.0\%}*100\% \\\\m_{solution}=446.4g$

Regards.

3 0

3 years ago

What happens to isotopes that are unstable?

Lesechka [4]

<u>Explanation:</u>

Isotopes are defined as the chemical species of the same element which differs in the number of neutrons. The isotopes which are unstable are known as radioactive isotope. A radioactive (unstable )isotope can undergo 3 decay process:

1. Alpha Decay: In this decay process, a larger nuclei decays into smaller nuclei by releasing alpha particle. The particle released has a charge of +2 and a mass of 4 units.

$_Z^A\textrm{X}\rightarrow _{Z-2}^{A-4}Y+_2^4\alpha$

2. Beta-minus decay: In this decay process, a neutron gets converted into a proton and an electron. the particle released during this process is a beta-particle.

$_Z^A\textrm{X}\rightarrow _{Z+1}^A\textrm{Y}+_{-1}^0\beta$

3. Beta-plus decay: In this decay process, a protons gets converted into a neutron and electron-neutrino particle. The particle released during this process is a positron particle.

$_Z^A\textrm{X}\rightarrow _{Z-1}^A\textrm{Y}+_{+1}^0\beta$

Isotopes which are unstable in nature can undergo these 3 decay processes.

5 0

3 years ago