2.70 feet is the same as how many cm?

Which processes occurs during the calvin cycle?

sleet_krkn [62]

Answer:

The Calvin cycle has four main steps: carbon fixation, reduction phase, carbohydrate formation, and regeneration phase. Energy to fuel chemical reactions in this sugar-generating process is provided by ATP and NADPH, chemical compounds which contain the energy plants have captured from sunlight.

Explanation:

8 0

3 years ago

Answer quick pls its timed

Gekata [30.6K]

Answer:

Its job is to store light

Explanation:

Green plants have the ability to make their own food. They do this through a process called photosynthesis, which uses a green pigment called chlorophyll. ... Chlorophyll's job in a plant is to absorb light—usually sunlight. The energy absorbed from light is transferred to two kinds of energy-storing molecules.

4 0

3 years ago

Read 2 more answers

Which phrase is an example of what electrostatic forces hold together?

Andreyy89

Answer:

Cs+ and Cl− in CsCl is an example of electrostatic forces that hold together.

Explanation:

The interaction that occurs between atoms that have an electric charge is called electromagnetic force. When the charges are at rest, the interaction between them is called electrostatic force. This force depends on the distance "r" between the atoms.

Depending on the sign of the charges that interact, electrostatic force can be attractive or repulsive. The electrostatic interaction between charges of the same sign is repulsive (two negative charges or two positive charges), while the interaction between charges of the opposite sign (a negative charge and a positive charge) is attractive. In the case of neutral charges against negative or positive charges, no force is generated.

<u><em>Cs+ and Cl− in CsCl is an example of electrostatic forces that hold together. </em></u>In this example you have a positively charged atom (Cs₊) and a negatively charged atom (Cl₋). As they are opposite charges they will attract.

4 0

3 years ago

Chemistry! Help! Please!

Ratling [72]

Question 1

The correct answer is a.

Explanation

The relationship between $pH$ and $pOH$ is given by

$pH + pOH = 14$ , We can use $pH=-log[H^+]$ and $pOH= -log[OH^-]$ . In a we are given the concentration of [OH] and so we use that to find the pOH, then from pOH we can find the pH.

$pOH= -log [2.4 \times 10^-^2] = 1.62\\\\pH = 14 - 1.62= 12.38$

$b.pH=-log(1.53 \times 10^-^2) = 1.82$

c. HCl is a strong acid so it dissociates to 0.0001 $H^+$ and 0.0001 $Cl^-$ , hence

$pH= -log[0.0001] = 4$

$d.pOH= -log [4.4 \times 10^-9] = 8.36\\\\pH= 14- 8.36 = 5.64$

$a.[OH^-] = 2.4 \times 10^-^2$ has a pH 12.36 which is greater than 7

Question 2

The correct answer is d $O_2(g)$ .

Explanation

This is because solids and liquids do not appear in the equilibrium constant expression. Since $K= \frac{[products]}{[reactants]}$ .

For the equation

$2PbS_(_s_) + 3O_2_(_g_) + C_(_s_) \implies 2Pb _(_s_) + CO_2_(_g_) + SO_2(_g_)$

$K= \frac{[CO_2][SO_2]}{[O_2]}$

Question 3

The correct answer is c

In a molecule the oxidation number are assigned to get the sum of a neutral charge or ion. The overall charge of $SO_4^2^-$ is -2 and in all its compounds oxygen has -2 charge, hence

$S+ 4O = -2\\S+4(-2)=-2\\\implies S= -2 +8 = +6$

Question 4

The correct answer is b. An oxidising agent must gain electrons in a reaction, thus it is the one that undergoes reduction.In order find out what is being reduced we write half reactions for molecules that change their state. $Ag^+$ and $K^+$ are spectactor ions in this reaction.

$Cl_2 + 2e \implies 2Cl^-\\\\NO_2 +H_2O \implies NO_3 +2H^+ +2e\\\\H^+ + OH^- \implies H_2O\\$

In the chloride half reaction $Cl_2$ gains electrons to become $Cl^-$ ions.

Question 5

The last element D is correct. When a nucleus decays by beta emission it produces a daughter nucleus that has same mass number but different atomic number. Therefore beta-decay will have equation

$\frac{187}{75} Re \implies \frac{187}{76} Os + \beta$

Question 6

The correct answer is a. A beta particle is an electron because it has a charge of -1 and has same mass as an electron, while a positron is a particle with the same mass as an electron but with a positive charge.

4 0

3 years ago

Question 1 (2 points) What are the three subatomic particles that make up an atom? Question 1 options: Nucleus, Electrons &

Alex787 [66]

Answer:

1. electrons and neutrons protons

2. true

3. electrons are negative and neutrons are neutral

4. true

5. the total number of neutrons and protons

Explanation:

4 0

3 years ago