Helppp meee plzzzz!!!

Answer:

The answer is, in fact, Calcium Nitrate. I even looked it up to make sure, and according to PubChem, it is Calcium Nitrate. I suggest asking your teacher what this question is trying to ask because if it says it is not Calcium Nitrate, someone got it wrong.

Explanation:

The only other name I can think of, though, is Calcium Dinitrite.

mass Ag = 59.5 g

Given

64 g of Ag2O

Required

Mass of Ag

Solution

Proust stated the Comparative Law that compounds are formed from elements with the same Mass Comparison so that the compound has a fixed composition of elements

mass of Ag in Ag2O :

= ((2 x Ar Ag)/molar mass Ag2O )x mass Ag2O

[tex]\tt mass~Ag=\dfrac{2.Ar~Ag}{MW~Ag_2O}\times mass~Ag_2O[/tex]

Ar Ag : 107,8682 g/mol

MW Ag₂O = 231,735 g/mol

Input the value :

mass Ag = ( (2 x 107,8682 g/mol )/ 231.735) x 64 g

mass Ag = 59.5 g

Or we can use reaction

2Ag₂O ⇒ 4Ag + O₂

mol Ag₂O :

= 64 : 231.735

= 0.276

mol Ag :

= 4/2 x moles Ag₂O

= 4/2 x 0.276

= 0.552

mass Ag :

= 0.552 x 107,8682 g/mol

= 59.54 g

Answer: How many warnings have you gotten? depending on that you could've.

Explanation:

Answer:

if a non-metal takes two valence electrons then it get negatively charged to form ion.

Answer:

The nonmetal will gain a negative charge of magnitude 2

Explanation:

X be the nonmetal

On gaining two electrons

X^2-

Answer:

lowers salinity

Explanation: I did the quiz on k-12 hope this helps good luck

In an ecosystem with glaciers its melting lowers salinity of the ocean ,delivering fresh water to the ocean.

Ecosystem is defined as a system which consists of all living organisms and the physical components with which the living beings interact. The abiotic and biotic components are linked to each other through nutrient cycles and flow of energy.

Energy enters the system through the process of photosynthesis .Animals play an important role in transfer of energy as they feed on each other.As a result of this transfer of matter and energy takes place through the system .Living organisms also influence the quantity of biomass present.By decomposition of dead plants and animals by microbes nutrients are released back in to the soil.

Learn more about ecosystem,here:

https://brainly.com/question/1673533

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Answer:

C. Yes, if each sample contains 6.02 x 10²³ atoms.

Explanation:

It is possible for each sample to contain 1 mole of each sample if and only if each of the sample if made up of 6.02 x 10²³ atoms.

6.02 x 10²³ atoms is the Avogadro's number. This number is equivalent to a mole of a substance.

A mole is simply a unit of measurement and it is equivalent to 6.02 x 10²³ atoms.

Answer:

Answer: C (Yes, if each sample contains 6.02 x 1023 atoms.) for all the edge speed runners ;)

Explanation:

Got it right on the test review edge 2022

Answer:

Because he likes someone named shelly?

Answer:

Chlorine and sodium iodide. (see options attached)

Explanation:

Options:

(A) bromine and sodium chloride (B) bromine and sodium fluoride (C) chlorine and sodium fluoride (D) chlorine and sodium iodide

In the reactivity series, chlorine would displace all the other halogens down the group. The order goes:

The order of reactivity is chlorine > bromine > iodine.

Of all the halogens, iodine is the darkest in colour. Hence, the most likely mixture to give off dark coloration after displacement reaction would be that of chlorine and sodium iodide.

I hope this explanation was easy to understand.

Answer:

if she did it immediately and then weighed it all it would b

Explanation:

Answer:

The answer is B

I saw this question in class today

Explanation:

Answer:

Budding is a type of asexual reproduction in which a new organism develops from an outgrowth or bud due to cell division at one particular site.

Explanation:

Answer:

Budding is a type of asexual reproduction in which a new organism develops from an outgrowth or bud due to cell division at one particular site.

Explanation:

Answer:

Vanadium(V) oxide is the inorganic compound with the formula V2O5. Commonly known as vanadium pentoxide,

Explanation:

then it is answer D

Answer:

It would be Density because:

Density= mass/ volume

Density refers to the amount of matter or mass of a substance over a volume

Answer:

HCl

Explanation:

Given data:

Mass of Zn = 50 g

Mass of HCl = 50 g

Limiting reactant = ?

Solution:

Chemical equation:

Zn + 2HCl      →     ZnCl₂ + H₂

Number of moles of Zn:

Number of moles = mass / molar mass

Number of moles = 50 g/ 65.38 g/mol

Number of moles = 0.76 mol

Number of moles of HCl:

Number of moles = mass / molar mass

Number of moles = 50 g/ 36.5 g/mol

Number of moles = 1.4 mol

Now we will compare the moles of Reactant with product.

                 Zn         :          ZnCl₂

                  1           :             1

                 0.76     :           0.76

                Zn         :             H₂

                  1           :             1

                 0.76     :           0.76

               HCl         :          ZnCl₂

                  2           :             1

                 1.4         :           1/2×1.4 = 0.7

                HCl         :             H₂

                  2           :             1

                 1.4         :           1/2×1.4 = 0.7

Less number of moles of product are formed by HCl it will act limiting reactant.

Answer:

no government intervention, law of supply and demand, open trade with other countries

Explanation:

A free enterprise system is an economy that is free from any type of government intervention.

Also, I took the quiz :)

Answer:

Well, to separate salt from water, you would stir the two together to create a homogenous mixture. Then you would boil the mixture; all the water would evaporate, leaving behind the salt

Explanation:

Answer:

Mass = 3732.62 g

Explanation:

Given data:

Number of formula units = 8.53×10²⁴

Mass of sample = ?

Solution:

1 mole of any substance contain 6.022×10²³ formula units.

8.53×10²⁴ formula units ×1 mol / 6.022×10²³ formula units

1.42×10¹ mol

14.2 mol

Mass of magnesium phosphate:

Mass = number of moles × molar mass

Mass = 14.2 mol × 262.86 g/mol

Mass = 3732.62 g

Answer:

See explanation and image attached

Explanation:

Lewis structures dot structures that show the number of valence electron in a molecule. Sometimes, we show bonded electrons using a single line as in the image attached.

Two images are shown. They are the both resonance structures of diazene. The both structures only differ in the arrangement of electrons as we can see from the image.

Answer: The answer is c

Explanation:

The gases absorb some of the heat from the Sun, holding it to keep it warm near Earth's surface. Hence option C is correct.

Atmosphere is defined as a layer of gas that surrounds a planet and is kept there by the gravitational pull of the planetary body. The atmosphere of the earth shields its people by absorbing dangerous sun rays and preserving a constant temperature. It protects Earth from many space hazards and enables life there. As a result, it is crucial for regulating climate and a source of life on planet.

The majority of the infrared energy from the Sun is absorbed and re-emitted in all directions by greenhouse gas molecules and clouds, creating the greenhouse effect. This causes the lower atmosphere and the Earth's surface to warm.

Thus, the gases absorb some of the heat from the Sun, holding it to keep it warm near Earth's surface. Hence option C is correct.

To learn more about atmosphere, refer to the link below:

https://brainly.com/question/26767532

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Answer:

246.13389

Explanation:

Simplify the expression.

Answer:

2 : 2

Explanation:

The balanced chemical equation is given as:

            2K   +     Cl₂   →    2KCl

From the balanced reaction equation, we can conclude that;

Therefore, the mole ratio is 2:2 or 1:1 in the simplest form.

Answer:

D. in butterflies, some are born with more dark colored spots than others.

Explanation:

hope this helps my friend

Answer:

Sodium oxide is the product

Explanation:

4Na+O2->2Na2O

Answer:

So the answer is gonna be how to get enough energy for your daily life

Explanation:

Sometimes the human body cant get enough energy from the food and protein the food gives out.

Answer:

0.16 moles of Ar

Explanation:

One mole is equal to 6.022×10^23 atoms

9.63 x 10^22 atoms * 1 mol/6.022×10^23 atoms = 0.15991364995 moles

Answer:

 H₃PO₄    +    3NaBr  →    3HBr        +    Na₃PO₄

Explanation:

The unbalanced reaction expression is given as:

            H₃PO₄    +    NaBr  →    HBr        +    Na₃PO₄

We need to balance the expression.

Let us assign variable a, b, c and d and solve mathematically;

       aH₃PO₄    +    bNaBr  →    cHBr        +    dNa₃PO₄

Conserving H : 3a  = c

                   P:   a  = d

                   O :  4a  = 4d

                   Na:   b = 3d

                    Br:    b  = c

Let a  = 1, c  = 3, d  = 1, b  = 3

So:

     H₃PO₄    +    3NaBr  →    3HBr        +    Na₃PO₄

Answer:

30g

Explanation:

According to this question, a sulfur-containing compound is said to contain 15 percent by mass of sulfur. This means that 15% of the total mass of the compound is the mass of sulfur in the compound.

The question further states that there is a total of 200g of the compound containing sulfur, this means that the mass of sulfur can be calculated this:

Mass of sulfur = 15% of 200g

15/100 × 200g

15 × 2

30g

Hence, there are 30g of sulfur in 200g of the sulfur containing compound.