I’ll give brainliest, pls help with this mole concept. Due in 2hours

Answer:

NH4CI

AMMONIUM CHLORIDE

NA2CO3

SODIUM CARBONATE

Answer:

1. cells

2. energy

3. pre-existing cells by division

Explanation:

Answer:

1. All living things have 1 or more cell

2. All organisms use a source of energy

3. All cells come form other pre-exsisting cells

Explanation:

The red diamond tells how flammable the chemical compound is or how easily it catches fire.

The yellow diamond tells about reactivity how quickly the compound reacts with other materials.

Answer:

Ca- 20,20,20

Na-11,12,11

U-92,146,92

i dont know what the last one is

Explanation:

The change in color might indicating the formation of a new product. Hence, the color change indicates a chemical change.

A chemical change involves the breaking/ making or both of chemical bonds. Chemical changes results in formation of new products that have different properties and structure from the initial substances.

A physical change include change in size, shape, state etc. All phase changes such as melting, boiling, freezing are physical changes. Evolution or absorption of heat, conductivity, solubility etc are physical changes.

A change in color indicates that a new product with different color is formed in the system. Therefore, option c color change indicates a chemical change.

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Answer:

draw the carbon chain is containing 6 carbon then attach the aldehyde group with edge carbon in chain then put the put double bond at 3 no. carbon

Answer:

Trees change over time.

Explanation:

In the summer, trees thrive on the nutrients the sunlight gives them. In the winter, their leaves change colors and they start to perish. Then, with a little bit of sunlight ad water, they can thrive again. Stars also start to perish at some point, but they do not thrive again. They continue perishing until they implode.

Answer:

i didint understand your question

Answer:

the answer is yes

Explanation:

I don't no

The number of moles = 0.5

Given

3.01 x 10²³ atoms Cu

Required

moles

Solution

The mole is the number of particles(molecules, atoms, ions) contained in a substance  

1 mol = 6.02.10²³ particles

Can be formulated

N=n x No

N = number of particles

n = mol

No = Avogadro's = 6.02.10²³

Input the value :

n = N : No

n = 3.01 x 10²³ :  6.02.10²³

n = 0.5

Answer:

both parents traits and genes

Answer: 4.heat being added or released

Answer:

The answer is C: “sunlight in deeper locations decrease”

Explanation:

C is the answer because the more salinity water has.. the harder it is to see and the harder it is for light to travel through the ocean.

Answer:

c

Explanation:

Answer:

0.75 moles

Explanation:

S2 + 2O2 = 2SO2

From the reaction above,

We see that number of moles attached to S2 is 1 and number of moles attached to SO2 is 2.

Since we want to find how many moles of S2 are needed to produce 1.50 moles of SO2 gas

The answer is gotten by proportion;

Number of moles = 1/2 × 1.5 = 0.75 moles

Answer:

Environment mainly consists of atmosphere, hydrosphere, lithosphere and biosphere. But it can be roughly divided into two types such as (a) Micro environment and (b) Macro environment. It can also be divided into two other types such as (c) Physical and (d) biotic environment.

Explanation:

Answer:

B. Sun

Explanation:

While what exactly qualifies as "living" can be contested when talking about viruses, bacteria, etc. It is commonly accepted that Bacteria, Fungi and Animals (Cows) are all organisms. The Sun, however is no organism.

Answer:

2,909 M

Explanation:

molair mass is of.ethylene is 26,04 g/mol

first you need to calculate how much mL 3 kg is. You can do this by using the density of ethylene: 1,1 g/mL.

3000 g x 1.1 = 3300 mL = 3,3 L

Next you need to calculate the amount of moles:

250 g / 26,04 g/mol = 9,60 mol

Now you can calculate the molarity:

9,6/3.3 = 2,909 M

I don't know the answer for the second question. I'm sorry.

Mass of  Na2SO4= 514.18 grams

Given

423.67 g of NaCl

Required

mass of  Na2SO4

Solution

Reaction

2NaCl + H2SO4 → Na2SO4 + 2HCl

mol NaCl :

= 423.67 g : 58.5 g/mol

= 7.24

From the equation, mol Na2SO4 :

= 1/2 x mol NaCl

= 1/2 x 7.24

= 3.62

Mass  Na2SO4 :

= 3.62 mol x 142,04 g/mol

= 514.18 grams

22.48 g. mass of oxygen combines with 2.81 mol of magnesium in the reaction. For the reaction 2 Mg(s) + O2(g) → 2 MgO(s).

The term molar mass is defined as the mass of 1 mole of that particular substance and number of grams per mole of a compound.

In other words, the molar mass is the total mass in grams of all the atoms that make up a mole of a specific molecule. As a result, the molar mass units are grams/mole.

The balance chemical equation is as follows :

2 Mg(s) + O2(g) → 2 MgO(s)

The metal Mg reacts with Oxygen in a 2:1 ratio you would divide 2.81 by two.

Now, we get,

2.81 / 2 = 1.405

You would then multiply 1.405 by the molar mass of Oxygen which is 15.999

= 1.405 × 16

= 22.48 g.

Thus, 22.48 g. mass of oxygen combines with 2.81 mol of magnesium in the reaction.

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Answer:

The greenhouse effect is a phenomenon of radiative transfer, the process by which the energy of light waves is exchanged in matter. Radiative transfer dictates what energy is reflected, absorbed, and emitted. The greenhouse effect: A summary of the heat transfer in the Earth's atmosphere

Explanation:

trust me i have a huge brain and access to the internet

Answer:

Its food for cannibals.

Answer:

Of the many processes involved in the water cycle, the most important are evaporation, transpiration, condensation, precipitation, and runoff.

Explanation:

Answer:

See explanation

Explanation:

We have been told in the question that the equation of the reaction is; 1 slice of cheese + 2 slices of bread = 1 Grilled cheese sandwich ( mole ratio is, 1:2:1) .

Then the reagents are 10 slices of cheese 30 slices of bread. It then follows that 10 slices of cheese should be combined with 20 slices of bread according to the mole ratio.

However, we have 30 slices of bread and 10 slices of cheese so cheese is the limiting reactant while bread is the reactant in excess.

Yes, the number of glilled chese sandwishes he can make is decided by the limiting reactant because it gets used up most.

Answer:

when heated to incandescence, calcium nitrate decomp into /nitrogen oxide, calcium oxide and oxygen/

Explanation:

Answer:

Explanation:

Do you mean what elements is Ca(NO3)2 made from? I think that's what you mean. Every mol of Ca(NO3) contains

Ca = 1 mol

N = 2 mols

O6 = six moles of oxygen

Answer:

Basically, solubility increases with temperature. It is the case for most of the solvents. The situation is though different for gases. With increase of the temperature they became less soluble in each other and in water, but more soluble in organic solvents.

Answer:

The answer is B

The motion of the shopping cart will change when the forces acting on the shopping cart are unbalanced. Option B is correct.

According to Newton's first law of motion, an object will remain in its state of motion (either at rest or moving with a constant velocity) unless acted upon by an external force. In this case, the shopping cart is initially at rest or moving with a constant velocity due to the balanced forces exerted by the two people pushing it from opposite sides.

If the two forces applied by the people pushing the cart are equal the cart will continue to move in the same direction with the same velocity. The forces cancel each other out, resulting in a balanced force situation, and there is no change in motion.

However, if the forces applied by the two people pushing the cart are unequal, the forces are unbalanced. This will result in a net force acting on the shopping cart, causing an acceleration and a change in its motion. The cart will either start moving if it was initially at rest or change its speed and/or direction if it was already in motion.

When both people stop applying a force is incorrect because, the cart's motion will continue unchanged if it was already moving with constant velocity due to the absence of any unbalanced forces.

Hence, B. is the correct option.

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Answer:

theres no options?

Explanation:

Answer:

The cell is in a Hypotonic solution. When a cell is in a Hypotonic solution the lower osmotic pressure causing water to move across the pressure gradient into the solution causing the cell to shrivel.