Guys pls HELP ME PLS I WOLL GIVE BRAINLIEST PLS

Answer:

[tex]0.64molCr(NO_3)_3[/tex]

Explanation:

Hello there!

In this case, according to the given chemical equation, it turns out possible for us to realize there is a 4:3 mole ratio of chromium(III) nitrate to lead(IV) nitrate, and therefore, we can calculate the moles of the former by applying the shown below stoichiometry setup:

[tex]0.85molPb(NO_3)_4*\frac{3molCr(NO_3)_3}{4molPb(NO_3)_4} \\\\0.64molCr(NO_3)_3[/tex]

Regards!

Answer:

2.675 moles of Chlorine gas are required

Explanation:

Chlorine gas, Cl2, reacts with NaBr to produce NaCl and Br2 as follows:

Cl2 + 2NaBr → 2NaCl + Br2

Where 1 mole of chlorine gas produce 2 moles of NaCl

Thus, to produce 5.35 moles of NaCl are required:

5.35mol NaCl * (1mol Cl2 / 2mol NaCl) =

Answer:

Q = 8100 J.

Explanation:

Hello there!

In this case, according to the given information, we can infer this is a question about calorimetry, and we can use the general heat equation to solve this one:

[tex]Q=mC(T_2-T_1)[/tex]

Thus, we plug in the given mass, specific heat and temperatures to obtain the energy involved in this heating process:

[tex]Q=400g*0.11\frac{cal}{g\°C} (65\°C-21\°C)\\\\Q=1936cal[/tex]

Which converted to Joules turns out to be:

[tex]Q=1936cal*\frac{4.184J}{1cal} \\\\Q=8100J[/tex]

Regards!

Answer:

the degree to which they decrease CNS activity

Explanation:

Drugs can be classified as;

✓hallucinogens, example is (LSD)

✓ stimulants, example is (cocaine)

✓opium-related painkillers example is (heroin)

✓depressants

Depressants can be regarded as medicines, that lowers neurotransmission levels, that is depressing or reducing arousal or stimulation as regards to various areas of the brain. these could be tranquilizers, as well as hypnotics and

sedatives. They are drugs used in slowing brain activity, therefore, making them useful when treating anxiety, sleep disorders, panic and acute stress reactions.

Example of Depressants are;

✓Xanax

✓Halcion

✓Klonopin

✓Librium

It should be noted that Depressants are often classified according to the degree to which they decrease central nervous system (CNS) activity.

Answer:

NA + F2 = NAF - Chemical Equation Balancer.

2 Na + F 2 → 2 NaF

Na is a reducing agent, F 2 is an oxidizing agent. ; Pale-yellow to greenish gas with a pungent, irritating odor.

Explanation:

dolly was cloned I guess

Answer:

pOH = 11

Explanation:

The pH is an unit of concentration widely used in chemistry to find the quality of a solution.

To solve this question we must, as first, find the [H+] using the pH:

[H+] = 10^-pH

[H+] = 10^-3

Now, using kw:

kw = 1.0x10-14 = [H+] [OH-]

1.0x10-14 = [10^-3] [OH-]

[OH-] = 1.0x10-11

pOH = -log [OH-]

Answer:

Sediment to sedimentary rock (and vice versa) is Compactation and Cementation.

Explanation:

This happens via Lithification, which is the compacting of sediments under pressure.

Answer:

molar mass (molar weight)

Explanation:

Answer:

Explanation:

cells process rna and trna

converting food into energy

the regrowth of cells that have died through out the day

the transcription of dna to rna

hope this helped :)

Answer:

I think the answer is boiling

Answer:

B) Cu2+ + 2e– → Cu.

Explanation:

Hello there!

In this case, in the regard of redox reactions, we must keep in mind that half-reactions show us how the flow of electrons when an element undergoes a change in its oxidation state, say increasing or decreasing. In such a way, if the element is oxidized, increase the oxidation state, we add electrons on the right side and the contrary if the element is reduced, decrease the oxidation state.

In such a way, we can see that the reaction B) Cu2+ + 2e– → Cu, shows how the Cu2+ cations are reduced by adding electrons to produce Cu and thus, conserve the charge.

Best regards!

Answer:

you can test carbon dioxide gas with calcium hydroxide

hope this is what you're looking for

stay safe and have a nice day

✌◕ ◡ ◕✌

Answer:

15.06 L

Explanation:

Using the ideal gas law equation:

PV = nRT

Where;

P = pressure (atm)

V = volume (L)

n = number of moles (mol)

R = gas law constant (0.0821 Latm/molK)

T = temperature (K)

According to the information provided in this question,

P = 3.50 atm

n = 1.9 moles

V = ?

T = 65°C = 65 + 273 = 338K

Using PV = nRT

V = nRT/P

V = (1.9 × 0.0821 × 338) ÷ (3.5)

V = 52.725 ÷ 3.5

V = 15.06 L

Answer:

5

Explanation:

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Answer:

Molecule

Explanation:

when two or more than two non-metal elements are combined then it form Molecule.

Answer:

F G there you go the guy on top is right

Explanation:

F G

Answer:

The temperature of the balloon is 46.34 K.

Explanation:

An ideal gas is a theoretical gas that is considered to be composed of point particles that move randomly and do not interact with each other. Gases in general are ideal when they are at high temperatures and low pressures.

An ideal gas is characterized by three state variables: absolute pressure (P), volume (V), and absolute temperature (T). The relationship between them constitutes the ideal gas law, an equation that relates the three variables if the amount of substance, number of moles n, remains constant and where R is the molar constant of the gases:

P * V = n * R * T

In this case:

Replacing:

0.76 atm* 10 L= 2 moles* 0.082 [tex]\frac{atm*L}{mol*K}[/tex] *T

Solving:

[tex]T=\frac{0.76 atm* 10 L}{2 moles* 0.082\frac{atm*L}{mol*K}}[/tex]

T= 46.34 K

The temperature of the balloon is 46.34 K.

Answer:

An acid is a chemical that  is posining or sometimes not

Explanation:

This is the best I could explain brainliest

Answer:

They live in the open snow

Explanation:

Answer: According to reaction below, when one mol of oxygen reacts with two mol of hydrogen, two mol of water is produced. Thus, when 2.5 mol of oxygen reacted with hydrogen, 2 * 2.5 mol = 5 mol of water is produced. The molar mass of water is 18 g/mol.

Explanation:

Not My WORK!  I got this info from another site.  BUT I HOPE IT HELPS :)

Answer:

5/8 M

Explanation:

NaOH + HCl ====> NaCl + H2O

in 25 mL of 0.5M acid, we have 1/80 Mol of HCl

it mean we must have 1/80 Mol of NaOH.

20 mL = 1/50 L

(1/80)Mol / (1/50)L = 5/8 M

Answer:

bnsjsbbakakaisbsbwnsjznss

Explanation:

cnsjzjsnsnsjs ssnsnsnzksmnznnzna

Answer:

4. Atmospheric pressure decreases as altitude increases.

Explanation:

hope this helps and is right. p.s i really need brainliest :)

Answer:

The balance equation of Ca(OH)2 + HCl ---> CaCl2 + H2O​

is

Ca(OH)2(s) + 2HCl(aq) ---> CaCl2(aq) +2H2O​ (l) (balanced equation)

Answer:

Half-life = 2.7 days

Explanation:

The radioactive decay of an isotope follows the equation:

Ln[A] = -kt + ln[A]₀

Where [A] could be taken as the amount of A after t time, k is decay constant, [A]₀ initial amount of A.

Replacing to solve k:

Ln[3.125g] = -k*13.5days + ln[100g]

-3.465736 = -k*13.5days

k = 0.2567days⁻¹

Half-life is:

half-life = ln2 / k

Answer:

Your answer would be D, Hope this helps.