I’m confused and I don’t understand this, can someone help?

Answer:I believe it is c.

Explanation:

Answer:

C., or "geothermal energy."

Answer:

NaOH

Explanation:

An unknown solution has a pH of 6.8. The chemical that will increase the pH is NaOH. The correct option is a.

Acids have lower pH, and they are sour and bases have high pH, and they are bitter in taste.

HCl, NH3, HNO3 are all acids and acid decrease the pH. Only NaOH is a base, and it will increase the pH.

Thus, the correct option is a. NaOH.

Learn more about acid and bases

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Monounsaturated Fat 1g

Answer:

josephmelichar

Explanation:

In the first step, 2 protons combine. In doing so one of the protons will convert into a neutron by losing a positron (positive electron) and a neutrino; this is also known as beta decay. This changes one of the protons (positive charge) into a neutron (neutral charge) and allows the two particles to combine.

Answer:

1.9 L

Explanation:

Step 1: Given data

Step 2: Calculate the final volume of the gas

If we assume ideal behavior, we can calculate the final volume of the gas using the combined gas law.

P₁ × V₁ / T₁ = P₂ × V₂ / T₂

V₂ = P₁ × V₁ × T₂ / T₁ × P₂

V₂ = 1.5 atm × 3.0 L × 303 K / 293 K × 2.5 atm = 1.9 L

Answer:

A budget is an estimation of revenue and expenses over a specified future period of time and is usually compiled and re-evaluated on a periodic basis. Budgets can be made for a person, a group of people, a business, a government, or just about anything else that makes and spends money.

Answer:

[tex]\boxed {\boxed {\sf 0.3 \ mol \ NaNO_3}}[/tex]

Explanation:

Molarity is a measure of concentration in moles per liter.

[tex]molarity= \frac{moles \ of \ solute}{liters \ of \ solution}[/tex]

The molarity of the solution is 1.2 M NaNO₃ or 1.2 moles NaNO₃ per liter. There are 0.25 liters of the solution. The moles of solute are unknown, so we can use x.

[tex]1.2 \ mol \ NaNO_3/L= \frac{x}{0.25 \ L}[/tex]

We are solving for x, so we must isolate the variable, x. It is being divided by 0.25 liters. The inverse of division is multiplication, so we multiply both sides by 0.25 L.

[tex]0.25 \ L *1.2 \ mol \ NaNO_3/L=\frac{x}{0.25 \ L} *0.25 \ L[/tex]

[tex]0.25 \ L *1.2 \ mol \ NaNO_3/L=x[/tex]

The units of liters cancel, so we are left with the units moles of sodium nitrate.

[tex]0.25 *1.2 \ mol \ NaNO_3=x[/tex]

[tex]0.3 \ mol \ NaNO_3=x[/tex]

There are 0.3 moles of sodium nitrate.

Unnillium (101)

Unnilbium (102)

Unniltrium (103)

Unnilquadium (104)

Unnilpentium (105)

Unnilhexium (106)

Unnilseptium (107)

Unniloctium (108)

Unnilennium (109)

Ununnillium (110)

Answer:

39.2 g

Explanation:

2Ni₂O₃(s) ⟶ 4Ni(s) + 3O₂(g)

First we convert 55.3 g of Ni₂O₃ into moles, using its molar mass:

55.3 g ÷ 165.39 g/mol = 0.334 mol Ni₂O₃

Then we convert 0.334 Ni₂O₃ moles into Ni moles, using the stoichiometric coefficients of the balanced reaction:

0.334 mol Ni₂O₃ * [tex]\frac{4molNi}{2molNi_2O_3}[/tex] = 0.668 mol Ni

Finally we convert 0.668 Ni moles into grams, using its molar mass:

0.668 mol * 58.69 g/mol = 39.2 g

Answer:  Mafic rocks are dominated by plagioclase and pyroxene (even if you can't see them with the naked eye) and smaller amounts of olivine. Intermediate rocks are roughly even mixtures of felsic minerals (mainly plagioclase) and mafic minerals (mainly hornblende, pyroxene, and/or biotite). There is little or no quartz.

HOPE THIS HELPS

Given

Mass of NO - 824 g

Molar mass of NO - 30.01g/mol

No of moles of NO = Given mass/Molar mass

No of moles of NO = 824/30.01= 27.45 mole

Hence 27.5 moles of NO are formed!

Answer:

Sample A

Explanation:

Molarity of a solution can be calculated using the formula:

Molarity = number of moles (mol) ÷ volume (vol)

For Sample A:

V = 300ml = 300/1000 = 0.3 L

Molarity = 1M

n = number of moles (mol)

1 = n/0.3

n = 0.3moles

For Sample B:

V = 145 mL = 145/1000 = 0.145L

Molarity = 1.5 M

n = number of moles

1.5 = n/0.145

n = 1.5 × 0.145

n = 0.22 moles

Based on the above results (moles), sample A with 0.3 moles contains the larger concentration of sodium chloride.

Answer:

The answer is A: (more below)

Liquid A: Neutral

Liquid B: Acid

Liquid C: Base

Explanation:

Ph scale: 1 - 6 are acids, 7 is neutral, 8 - 14 are bases.  

14

13

12

11

10

9

8

7

6

5

4

3

2

1

Answer:

What about it? I don't get the question

Explanation:

Correct option is

B

18

As reaction for the formation of Al 2

is as follows:

4Al+3O

2

→Al 2

O

this shows that 4 mol reacts to 3 mol ( 96 g) of O

2

so as 3 mol O

2

to 4 mol Al

then 0.5 mol O 2 to 3, 4

×0.5=0.66 mol of Al

as 1 mol Al = 27 g

then 0.66 mol of Al=0.66×27=17.9 g≈18 g

Hence, the correct option is B.

Answer:

89.3 mL

Explanation:

First we convert 20.0 °C and 54.0 °C to K:

With the absolute temperatures we can solve this problem by using Charles' law:

Where in this case:

We input the data:

And solve for V₂:

Answer:

0.60 moles of atoms of carbon

Explanation:

Step 1: Given data

Step 2: Calculate the number of carbon atoms in the given sample

According to the chemical formula of the compound, the molar ratio of C to O is 2:6, that is, there are 2 moles of atoms of C every 6 moles of atoms of O. The number of moles of atoms of C is:

1.8 mol O × 2 mol C / 6 mol O = 0.60 mol C

Answer:

Have 2 filled orbitals and 3 partially filled orbitals.

Explanation:

Hello there!

In this case, according to the given information of the electron configuration for that particle; it is possible for us to infer it has 5 valence electrons, as the electrons on its outermost shell (2). Moreover, we undertand this particle needs three bonds, does not have neither the electron configuration of a noble gas which ends by p⁶ nor that of an alkali earth metal as it ends by s².

Therefore, we infer the correct answer is Have 2 filled orbitals and 3 partially filled orbitals because according to the Hund's rule, the s orbital is fulfilled and the p orbital has 1 electron orbital fulfilled and two partially filled orbitals.

Regards!

Answer:

In summer, anticyclones bring dry, hot weather. In winter, clear skies may bring cold nights and frost. In cold conditions, anticyclones may also bring fog and mist. This is because the cold forces moisture in the air to condense at low altitudes.

Answer:

an anticyclone is an area of high pressure that brings fine setteled weather. in an anticyclone the air is decending which means it is trapped on the ground and cannot rise, therefore we don't get rain!

Explanation:

Answer:

C₂H₄O

Explanation:

Empirical formulas show the simplest ratio of atoms in a compound in whole numbers.

We can think that all the atoms are divisible by 4.

As we need the lowest number for each subscript, empirical formula is:

C₂H₄O

We have divided, 8/4 for carbon, 16/4 for H and 4/4 for O.

The empirical formula is also known as the simplest expression to represent a chemical

Answer:

B.Anything that takes up space and has mass

Answer:

A

Explanation:

Hydrogen isn't an alkali metal

Answer:

hydrogen

Explanation:

hydrogen is a gas not a metal

Answer:

3.12 x 25.6 = 79.9 g