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igomit [66]
2 years ago
9

Your body is made up of trillions of cells that perform all the functions you need to survive. Which other kinds of organisms ar

e composed of cells?
Only animals are composed of cells.
Only animals are composed of cells.

Only animals and plants are composed of cells.
Only animals and plants are composed of cells.

Only animals, plants, and bacteria are composed of cells.
Only animals, plants, and bacteria are composed of cells.

All organisms are composed of cells.
Chemistry
1 answer:
Trava [24]2 years ago
8 0
All organisms are composed of cells.
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Which has a higher mass percent of magnesium mgo or mg3n2?
vampirchik [111]
The  compound  that  has   higher  mass percent  is  Mg3N2  which is 72%


explanation
calculate  the %  mass  of Mg  in each  compound

%  composition  of  mg= molar mass of  Mg/  total  molar  mass  of the compound  x100

in MgO  =  24 /40  x100 = 60%

in Mg3N2  =72/100 x100  =  72 %

therefore  the % composition  in Mg3N2  is higher

6 0
3 years ago
Questions
ASHA 777 [7]

Answer:

Explanation:

1. diffusion is a physical process when there is random motion of molecules by which there is a net flow of matter from a region of high concentration to a region of low concentration.

2. Osmosis is the diffusion of water where molecules of water move passively (without energy) from high concentration to low concentration. eg: the way water rushes into a sponge.

3. Active transport moves particles from low to higher concentration. The difference between diffusion and active transport is diffusion does not require energy (eg: oxygen moving from the airways to the lungs - there is very little oxygen in the lungs but lots in the air).  whereas active transport does require energy (eg: when plants take up nutrients from the soil. The soil does not have a large concentration of nutrients, but the plant does)

7 0
3 years ago
Determine the specific heat of a material if a 35. Gram sample absorbed 96. Joules of energy as it was heated from 293 K to 313
podryga [215]

The specific heat of a material is 0.137 J/g°C.

<u>Explanation:</u>

The specific heat formula relates the heat energy required to perform a certain reaction with the mass of the reactants, specific heat and the change in temperature during the reaction.

Q = mcΔT

Here m is the mass, Q is the heat energy required, ΔT is the change in temperature and c is the specific heat.

So, if we have to determine the specific heat of the object, then we have to determine the ratio of heat required to mass of the object with change in time, as shown below.

c = \frac{Q}{m\ \times\ delta\ T}

As mass of the object m is given as 35 g and the energy is said to be absorbed so Q = 96 J.

The temperature values given should be changed from kelvin to celsius first. So, initial temperature 293 K will become 293-273.15 = 19.85°C.

Similarly, the final temperature will be 313 - 273.15 = 39.85°C.

Then, ΔT = 39.85-19.85 = 20 °C

Then,

c = \frac{96}{35 \times 20} =\frac{96}{700}  = 0.137 J/g^{o}C

So, the specific heat of a material is 0.137 J/g°C.

6 0
3 years ago
Name the functional group in the
zysi [14]

Answer:

the correct answer B. carboxylic acid

Explanation:

carboxylic acid, any of a class of organic compounds in which a carbon (C) atom is bonded to an oxygen (O) atom by a double bond and to a hydroxyl group (―OH) by a single bond. A fourth bond links the carbon atom to a hydrogen (H) atom or to some other univalent combining group.

6 0
2 years ago
En las siguientes reacciones identifique cuales sustancias corresponden a ácidos y bases de Arrhenius y cuales a ácidos y bases
ser-zykov [4K]

Answer:

do you have an english version

Explanation:

7 0
3 years ago
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