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3 years ago

Plants give off oxygen as part of photosynthesis. Explain the impact of this process on humans?

Chemistry

1 answer:

PolarNik [594]3 years ago

7 0

Answer:

i think it haven't impact because oxygen is very sensitive for our life and from plants there is so many kinds of food sources soo

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*SCIENCE*

Slav-nsk [51]

Answer: The correct answer is (D).

Explanation:

Space photography help astronomers:

To visualize and observe the position and appearance of celestial objects like: path of orbiting planets ,dim stars which invisible to naked eyes ,far away galaxies etc.
To observe any phenomena which is occurring at macro level for example: collision of steroids and meteors etc.

5 0

3 years ago

Read 2 more answers

Medical cold packs can use various chemicals in order to produce a cold compress to help reduce inflammation caused by injuries.

Illusion [34]

Answer:

Mass of KCL = 218 grams.

Explanation:

Step 1: calculate the heat that must be absorbed(q).

Heat that must be absorbed(q) is calculated as follows:

q= m c (T2-T1).

q = 750g (4.18 J/gC)(20-4 C) = 5.016X10^4 J = 50.16 kJ

Step 2: we determine moles of KCL as follows:

Moles KCl = 50.16 kJ / 17.2 kJ/mol = 2.92 moles.

Step 3: calculate mass of KCL:

Mass of KCl = 2.92 mol X 74.55 g/mol = 218g.

Therefore, 218 grams of KCL would have to be dissolved into 750 g of 20.0°C H2O to produce the solution.

3 0

3 years ago

Read 2 more answers

Ordered: amoxicillin 0.15 g POq8h for a patient with cystitis. The suspension contains 200 mg amoxicillin per 5.0 ml solution. H

valkas [14]

Answer:

3.75 ml per dose

Explanation:

We need to convert the units from g to mg and then perform a cross-multiplication.

The concentration of the drug is 200 mg/ 5.0 ml

200 mg = 0.2 g (because 1 g equals 1000 mg)

$\frac{0.2 g}{5 ml} =\frac{0.15 g}{x} \\ x= \frac{0.15 g *5 ml}{0.2 g}$

x = 3.75 ml

5 0

3 years ago

8 Questions need help this is for chemistry it’s due today !!!! Points are added

Dima020 [189]

Answer:

Hey There!

Hope it helps

Explanation:

There's Hydrogen and Helium,

Then Lithium, Beryllium

Boron, Carbon everywhere,

Nitrogen all through the air

With Oxygen so you can breathe

And Fluorine for your pretty teeth

Neon to light up the signs,

Sodium for salty times

MAGNESIUM, Aluminum Silicon PHOSPHORUS,

then Sulfur, Chlorine and Argon

POTASSIUM and Calcium so you'll grow strong

SCANDIUM Titanium Vanadium and Chromium and MANGANESE

This is the Periodic Table, Noble Gas are stable,

Halogens and Alkali react aggressively

Each period we'll see new outer shells

While electrons are added moving to the right

Iron is the 26 Then Cobalt, Nickel coins you get

Copper Zinc and Gallium

Germanium and Arsenic

Selenium and Bromine film

While Krypton helps light up your room

Rubidium and Strontium then Yttrium Zirconium

NIOBIUM Molybdenum Technetium

RUTHENIUM Rhodium Palladium

SILVER-WARE then Cadmium and Indium

TIN-CANS, Antimony Then Tellurium and

Iodine and Xenon and then Caesium and

Barium is 56, and this is where the table splits

Where lanthanides have just begun

Lanthanum Cerium and Praseodymium

Neodymium's next to, Promethium then 62,

Samarium, Europium, Gadolinium and Terbium,

Dysprosium, Holmium, Erbium, Thulium, Ytterbium, Lutetium

HAFNIUM Tantalum Tungsten then we're on to

RHENIUM, Osmium and Iridium

PLATINUM, Gold to make you rich till you grow old

MERCURY to tell you when it's really cold

THALLIUM and Lead then Bismuth for your tummy

POLONIUM Astatine would not be yummy

RADON Francium will last a little time

RADIUM then Actinides at 89

This is the Periodic Table, Noble Gas are stable,

Halogens and Alkali react aggressively

Each period we'll see new outer shells

While electrons are to the right

Actinium, Thorium, Protactinium

Uranium Neptunium Plutonium

Americium Curium Berkelium Californium

Einsteinium Fermium Mendelevium Nobelium

Lawrencium Rutherfordium Dubnium Seaborgium

Bohrium Hassium then Meinerium Darmstadtium

Roentgenium Copernicium

Ununtrium

Flerovium

Ununpentium

Livermorium

Ununseptium

Ununoctium

And then We're Done!!!

8 0

3 years ago

What is the volume?

Mrrafil [7]

172.1 L is correct answer.

7 0

3 years ago