PLZ HELP ASAP What is the common name of this organism?

Answer:

c) lenght/distance

Explanation:

Metric units are mostly used in Europe (centimeters and meters instead of inches and feet)

Answer:

c. length / distance

Answer:

8.822 × 10¹³ g Co

General Formulas and Concepts:

Chemistry - Atomic Structure

Explanation:

Step 1: Define

9.015 × 10³⁵ atoms Co

Step 2: Identify Conversions

Avogadro's Number

Molar Mass of Co - 58.93 g/mol

Step 3: Convert

[tex]9.015 \cdot 10^{35} \ atoms \ Co(\frac{1 \ mol \ Co}{6.022 \cdot 10^{23} \ atoms \ Co} )(\frac{58.93 \ g \ Co}{1 \ mol \ Co} )[/tex] = 8.82189 × 10¹³ g Co

Step 4: Check

We are given 4 sig figs. Follow sig fig rules and round.

8.82189 × 10¹³ g Co ≈ 8.822 × 10¹³ g Co

C. Decreasing the temperature

D. Raising the pressure​

Given

Reaction

2SO₂+O₂⇔2SO₃+energy

Required

Changes to  the formation of products

Solution

The formation of SO₃ is an exothermic reaction (releases heat)

If the system temperature is raised, then the equilibrium reaction will reduce the temperature by shifting the reaction in the direction that requires heat (endotherms). Conversely, if the temperature is lowered, then the equilibrium shifts to a reaction that releases heat (exothermic)  

While on the change in pressure, then the addition of pressure, the reaction will shift towards a smaller reaction coefficient  

in the above reaction: the number of coefficients on the left is 3 (2 + 1) while the right is 2

As the temperature decreases, the equilibrium will shift towards the exothermic reaction, so the reaction shifts to the right towards SO₃( products-favored)

And increasing the pressure, then the reaction shifts to the right SO₃( products-favored)⇒the number of coefficients is greater

Answer:

C. Decreasing the temperature

D. Raising the pressure​

Explanation:

A.P.E.X

Answer:

Climate change activists from Extinction Rebellion standing in solidarity with worldwide Black Lives Matter protests following the death of George Floyd, Sunday June 7, 2020 in St Ives, United Kingdom.(Gav Goulder/In Pictures via Getty Images)

“Racial justice is climate justice. That means police reform is climate policy.” Emily Atkin, a widely read climate journalist, wrote those words last week in the aftermath of the murder of George Floyd.

Atkin is not alone in making a direct connection between climate change and racism. Numerous environmental leaders and prominent climate activists have issued statements condemning police violence and expressing solidarity with racial justice organizations.

And for some notable climate movement figures, the relationship between anti-racism and climate activism extends much further than pro forma solidarity.

Writing in The New Yorker, global climate leader Bill McKibben entitled his latest article, “Racism, Police Violence, and the Climate Are Not Separate Issues.” And a recent piece by Eric Holthaus, a highly regarded meteorologist who writes about climate change, proclaimed, “The climate crisis is racist. The answer is anti-racism.”

Answer:

CuO is a basic oxide and when it reacts with water it gives Cu(OH)2 which is a base as it gives Cu2+ and OH− ions when dissolved in water.

Answer:

D. beaker on edge

Explanation:

Answer:

e.g converting 6.55×10^24 molecules of Sodium to moles.

We use Avogadro's number NA= 6.02×10^23 molecules.

Explanation:

[tex]6.02 \times {10 }^{23} molecules \: are \: in \: 1 \: mole \: of \: sodium \\ 6.55 \times {10}^{24} molecules \: will \: be \: in \: ( \frac{6.55 \times {10}^{24} \times 1}{6.02 \times {10}^{23} } ) \\ = 10.88 \: moles \: of \: sodium[/tex]

half-reactions

cathode(reduction) : Ni2+(aq) + 2e → Ni(s)

anode(oxidation) : Mg (s) → Mg²⁺ (aq) + 2e−

Given

Ni and Mg reaction

Required

the half-reactions

Solution

we determine which is the more reduced / oxidized of the two elements by looking at the voltaic series or the standard potential value

In voltaic series  

Li-K-Ba-Ca-Na-Mg-Al-Mn- (H2O) -Zn-Cr-Fe-Cd-Co-Ni-Sn-Pb- (H) -Cu-Hg-Ag-Pt-Au  

The more to the left, the metal is more reactive (easily release electrons) and the stronger reducing agent  

The more to the right, the metal is less reactive (harder to release electrons) and the stronger oxidizing agent

If we look at the Mg metal located to the left of the Ni metal, so the Mg metal is more easily oxidized and can reduce the Ni metal which is on the right

Mg oxidation

Mg(s) – Mg2+(aq) + 2e

Ni reduction

Ni2+(aq) + 2e → Ni(s)

Answer:

The correct answer is 1.66 atm ≅ 1.7 atm

Explanation:

Given:

T₁ = -13°C + 273 = 260 K (initial temperature)

T₂ = 15°C + 273 = 288 K (final temperature)

P₁ = 1.5 atm

P₂= ?

We use the mathematical expression of Gay Lussac's Law to calculate P₂, as follows:

P₁/T₁ = P₂/T₂

P₂= P₁/T₁ x T₂ = (1.5 atm)/(260 K) x 288 K = 1.66 atm ≅ 1.7 atm

Since the law says that the temperature of a gas is directly proportional to the pressure, when the temperature is increased, the pressure increases.

Answer:

B) rate of growth I'd say

Explanation:

it sounds better I don't think anyone would use height of plants if they want to sound professional

Answer:

1 oxygen from the lungs

Explanation:

maybe too help you breath better

Answer:

Mn is a Paramagnetic

Explanation:

Answer:

They can be installed underground.

Explanation:

Keeps the reactor coolant water under high pressure to prevent it from boiling.

Answer:

28.01

Explanation:

this is the molar mass

Answer:

Solvent

Explanation:

When one substance dissolves into another, a solution is formed. A solution is a homogeneous mixture consisting of a solute dissolved into a solvent

The relative molecular mass of acid A : 50 g/mol

Given

40.0 cm³(40 ml) of 0.2M sodium hydroxide

0.2g  of a dibasic acid

Required

the relative molecular mass of acid A

Solution

Titration formula

M₁V₁n₁=M₂V₂n₂

n=acid/base valence(number of H⁺/OH⁻)

NaOH ⇒ n = 1

Dibasic acid =  diprotic acid (such as H₂SO₄)⇒ n = 2

mol = M x V

Input the value in the formula :(1 = NaOH, 2=dibasic acid)

0.2 x 40 x 1 = M₂ x V₂ x 2

M₂ x V₂ = 4 mlmol = 4.10⁻³ mol ⇒ mol of Acid A

The relative molecular mass of acid A (M) :

[tex]\tt M_A=\dfrac{mass }{mol}=\dfrac{0.2~g}{4.10^{-3}}=50~g/mol[/tex]

Answer:0.9375, the second question is 1, the third question is 400, and the last is  3

Explanation: I just did the worksheet in my Chem class, and it was quite easy I didn't feel like going to all your questions and answering them so there ya go!

Answer:

1 1A (1+2=3)

2 2A (3-1=2)

3 0.5A (2-1.5=0.5)

Answer:Displacement reaction , as HCl displaces S of FeS to give H2S

Explanation:

Answer:

6.17 L

Explanation:

Answer: F

Explanation: I did that test yesterday lol

Answer:

b

Explanation:

Answer:

D

Explanation:

you would use F=ma

therefore the answer is 75N

a. 7 protons, 7 electrons, 10 neutrons

b. 19 protons, 19 electrons, 26 neutrons

c. 53 protons, 53 electrons, 84 neutrons

Given

Atom and mass number

Required

The number of each subatomic particle

Solution

a. Nitrogen atom(atomic number = 7)

mass number = 17 amu

atomic number=number of protons=number of electrons(in neutral atom)

so number of protons=number of electrons = 7

mass number = protons+neutron

17 = 7 + neutrons

number of neutrons = 17-7=10

b. Potassium atom (atomic number = 19)

mass number = 45 amu

atomic number=number of protons=number of electrons(in neutral atom)

so number of protons=number of electrons = 19

mass number = protons+neutron

45 = 19 + neutrons

number of neutrons = 45-19=26

c. Iodine atom ((atomic number = 53)

mass number = 137 amu

atomic number=number of protons=number of electrons(in neutral atom)

so number of protons=number of electrons = 53

mass number = protons+neutron

137 = 53 + neutrons

number of neutrons = 137-53=84

Both containers have the same number of molecules= 5.62 x 10²³

Given

22.4 L of hydrogen gas

22.4 L of oxygen gas

25°C and 1 atm.

Required

true statement

Solution

Conditions at T 25 ° C and P 1 atm are stated by RTP (Room Temperature and Pressure). Vm in this condition = 24 liters / mol

and from Avogadro's Law :

At the same temperature and pressure, the ratio of gas volume will be equal to the ratio of gas moles  

So two gas have the same molecules

1 mol = 6.02 x 10²³ molecules

24 L = 1 mol, so for 22.4 L :

[tex]\tt \dfrac{22.4~L}{24~L}\times 6.02\times 10^{23}~molecules=5.62\times 10^{23}~molecules[/tex]

Protons

Explanation: the atomic number is the same as the number of protons

Answer:

the mass number, trust me

Answer:

D

Explanation:

Answer:

Other forms of energy can convert to mechanical energy

Explanation:

For example the electric or magnetic energy in a motor can convert to mechanical energy, or another example is when you put two magnets together they will clip together due to the magnetic energy that they have.