If 35.5 grams of calcium oxide react with excess water, how many grams of calcium
hydroxide can be formed?
CaO + H2O - Ca(OH)2

Answer:

Osmosis

Explanation:

The movement of water across a membrane from an area of high concentration to that of low concentration is defined as osmosis.

Osmosis is very important in all living cells because it is one of key mechanism for transporting materials between and within cells.

The membrane most times is selectively permeable in nature and it allows for a regulated movement of materials from one region to another.

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:

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.

Answer:

K20(s)+H2O(L) -> 2KOH(aq)

Answer:

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

Explanation:

then it is answer D

0.94Answer:

Explanation:

TO find the number of moles in a substance given its number of  

entities we use the formela

Answer: Energy storage is the capture of energy produced at one time for use at a later time to reduce imbalances between energy demand and energy production. A device that stores energy is generally called an accumulator or battery.

Explanation:

Answer:

Ventilator

Explanation:

What is the WHMIS 1988 classification? ... Symbol for Class D1 ... Direct contact with the liquefied gas can chill or freeze the skin (frostbite). ... Take precautions to ensure your own safety before attempting rescue (e.g. wear ... Increase ventilation to area or move leaking container to a well-ventilated and secure area.

So B. is the Right Choice!

Answer:

Mechanical energy

Kinetic energy

Explanation:

The mechanical energy is the sum of the kinetic and potential energy of the particles that make up the baseball.

Mechanical energy is made up of kinetic energy and potential energy. When the baseball is in motion, the particles make use of the kinetic energy, also known as motion energy and when the ball is not in motion the particles make use of the potential energy, also known as stored energy.

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:

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

Explanation:

Answer:

A. Total number of protons and neutrons

Explanation:

In both nuclear reactions and chemical reactions, the total number of protons and neutrons are conserved.

It implies that the starting number of protons and neutrons in both reactions must be the same.

Chemical reactions involves, loss, gain or sharing electrons between two atoms.

Nuclear reactions deals with the nucleus of an atom.

It must be ensured that the mass and atomic number in nuclear reactions is conserved.

Answer:

Total number of protons and neutrons

Explanation:

Ap3x

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:

Mice

Explanation:

Small, rodent-like mammals, such as voles and mice, are the primary prey for many owl species. An owl's diet may also include frogs, lizards, snakes, fish, mice, rabbits, birds, squirrels, and other creatures. Occasionally, Great Horned Owls might even find skunks tasty enough to eat.

Please mark brainliest! I only need one more to rank up! Thank you and have a blessed day/night :D

Answer:

mice and shrews

Explanation:

i did the virtual lab on edg:)

Heat = 1.74 kJ

Given

melts at 328 ℃ + 273 = 601 K

mass = 23 g = 0.023 kg

initial temperature = 297 K

Final tmperature = 702 K

Required

Heat

Solution

1. raise the temperature(297 to 601 K)

c of lead = 0.130 kJ/kg K

Q = 0.023 x 0.13 x (601-297)

Q = 0.909 kJ

2. phase change(solid to liquid)

Q = m.Lf (melting/freezing)

Q = 0.023 x 23 kj/kg = 0.529 kJ

3. raise the temperature(601 to 702 K)

Q = 0.023 x 0.13 x (702-601)

Q = 0.302 kJ

Total heat = 1.74 kJ

Answer:

This is called negative adsorption. Hence if the concentration of the adsorbate is less on the surface of the adsorbent than in the bulk, it is known as negative adsorption.

Explanation:

Hope this helps

495 g K₃N

Math

Pre-Algebra

Order of Operations: BPEMDAS

Chemistry

Atomic Structure

Stoichiometry

Step 1: Define

3.77 mol K₃N

Step 2: Identify Conversions

Molar Mass of K - 39.10 g/mol

Molar Mass of N - 14.01 g/mol

Molar Mass of K₃N - 3(39.10) + 14.01 = 131.31 g/mol

Step 3: Convert

Step 4: Check

Follow sig fig rules and round. We are given 3 sig figs.

495.039 g K₃N ≈ 495 g K₃N

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.

The balanced equation :

2NaHCO₃⇒CO₂ + Na₂CO₃+H₂O

Given

Reaction

NaHCO(s) --> _CO2+_NaCO(s)+_H2O

Required

The balanced equation

Solution

Maybe the equation should be like this :

NaHCO₃⇒CO₂ + Na₂CO₃+H₂O

Give a coefficient

NaHCO₃⇒aCO₂ + bNa₂CO₃+cH₂O

Make an equation

Na, left=1, right=2b⇒2b=1⇒b=1/2

H, left=1, right=2c⇒2c=1⇒c=1/2

C, left=1, right=a+b⇒a+b=1⇒a+1/2=1⇒a=1/2

The equation becomes :

NaHCO₃⇒1/2CO₂ +1/2Na₂CO₃+1/2H₂O x2

2NaHCO₃⇒CO₂ + Na₂CO₃+H₂O

Answer:coke

Explanation:

Coke contains more sugar making it more dense

Answer: The molal concentration of sucrose solution is 1.07 m

Explanation:

Depression in freezing point is given by:

[tex]\Delta T_f=i\times K_f\times m[/tex]

[tex]\Delta T_f=T_f^0-T_f=0.00-(-2.00)^0C=2.00^0C[/tex] = Depression in freezing point

i= vant hoff factor = 1 (for non electrolyte such as sucrose)

[tex]K_f[/tex] = freezing point constant = [tex]1.86^0C/m[/tex]

m= molality

Putting in the values:

[tex]2.00^0C=1\times 1.86^0C/m\times m[/tex]

[tex]m=1.07[/tex]

Thus molal concentration of sucrose solution is 1.07 m

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:

+4

Explanation:

Answer:

Oh, you need to get the blue dots, and move them to the table or graph to plot them!

Hope that makes sense!