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2 years ago

Protists are single-celled microscopic creatures that inhabit ponds and seawater. In which sphere do they live?

Chemistry

1 answer:

BlackZzzverrR [31]2 years ago

3 0

Answer:

The presence of a nucleus in all protist organisms means they are all eukaryotic. ... Whether an organism contains one or multiple cells, the nucleus – the first and ... Diatoms; Green Algae – can live in fresh or salt water and sometimes moist ... Microscopy studies can be as easy as using a pipette to drop pond water onto a ...Explanation:

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I am a celestial body that does not produce light. I orbit a planet

Artyom0805 [142]

A moon would be the correct answer.

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2 years ago

Write a complete set of quantum numbers for the fifth electron added to a hydrogen ion (i.e., the fifth electron in any electron

ankoles [38]

N=
l=
m(l)=
m(s)=

start with H^+ (no electrons) , then adding 5 electrons will be 1s2 2s2 2p1
so for the 5th electron
n = 2
l = 1
ml = -1
ms = 1/2

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3 years ago

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How much heat must be transferred to 55 g of ice to change the ice's temperature from -13°C to -5.0°C? (The specific heat capaci

notka56 [123]

Answer:

Hey i don't know if you still need the answer but this is what i think it is:

Explanation:

B is correct answer

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3 years ago

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You start out with 800 moles of a radioactive substance. After 24 hours, 100 moles remain. What is the half-life of the substanc

Nookie1986 [14]

The half life of the substance is 8 hours , Option D is the correct answer.

What is Half Life ?

Half-life is the time required by an unstable element to reduce to half of its initial value.

The term is commonly used in nuclear physics.

The formula is

$\rm N(t) = \; N_{0} \;(\dfrac{1}{2} )^{\frac{t}{t_{1/2} } }$

N(t) = quantity of the substance remaining

N ₀ = initial quantity of the substance

t = time elapsed

$\rm t_{1/2}$ = half life of the substance

The data given in the question is N ₀ = 800 moles , N(t)= 100 , t= 24 hours

$\rm t_{1/2} =\; ?$

Substituting values in the equation

$\rm 100 = \; 800 \;(\dfrac{1}{2} )^{\frac{24}{t_{1/2} } }$

$\rm \dfrac{100}{800} = \;(\dfrac{1}{2} )^{\frac{24}{t_{1/2} } }\\\\\rm \dfrac{1}{8} = \;(\dfrac{1}{2} )^{\frac{24}{t_{1/2} } }\\\\\rm (\dfrac{1}{2})^{3} = \;(\dfrac{1}{2} )^{\frac{24}{t_{1/2} } }\\\\\rm 3=\dfrac{24}{t_{1/2} }\\\\t_{1/2}= \dfrac{24}{3}\\\\t_{1/2} = 8 hours$

Therefore half life of the substance is 8 hours , Option D is the correct answer.

To know more about Half Life

brainly.com/question/24710827

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2 years ago

How is a lithium atom (Li) different from a lithium ion (Li+)

Andrews [41]

A Lithium atom that has lost ONE Electron, is called a Lithium Ion (Li+).

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3 years ago