Answer:
The correct answer is - the stigma at the top of the pistil receives pollen.
Explanation:
Pollination or transfer of the pollen from one flower to another occurs naturally with the help of the animals, insects, or wind. With the help of these carriers, pollen moves from the flower to the one plant to the receptive surface of the stigma of other plants.
Stigma is the sticky top of the pistils which receives the pollen and starts fertilization by growing a tube to the ovary through the style (long neck between the stigma and ovary) called pollen tube.
You’ll get marked as brainlist I think because that’s what happened last time (:
Answer:
both are physical, caused by heating
Explanation:
What do most of the plants photosynthesis occurs in ?
How many moles of helium are contained in 9.85 x 1023 atoms?
9.85 x 1023 atoms
Answer:
10076.55
Explanation:
which statement accurately describe stars
Zachary adds 9.7 g to 1.114 g.
How many significant figures should his answer have?
CH4 + 202 → CO2 + 2H2O
How many grams of O2 needed to produce 36 grams of H2O?
Answer:
Mass = 64 g
Explanation:
Given data:
Mass of water produced = 36 g
Mass of oxygen needed = ?
Solution:
Chemical equation:
CH₄ + 2O₂ CO₂ + 2H₂O
Number of moles of water produced:
Number of moles = mass/molar mass
Number of moles = 36 g/ 18 g/mol
Number of moles = 2 mol
Now we will compare the moles of water and oxygen.
H₂O : O₂
2 : 2
Mass of oxygen:
Mass = number of moles × molar mass
Mass = 2 mol × 32 g/mol
Mass = 64 g
Determine the molecular shape of each compound based on their Lewis structures. NO2 bent linear trigonal planar
Answer:
Bent
Explanation
Ed
Answer:
ANSWER- C: tetrahedral
Determine the molecular shape of each compound based on their Lewis structures.
CH2Cl2
bent
linear
tetrahedral
Explanation:
hope this helped :)
Solve you will get brainliest and23 points
Sodium chloride is dissolved in water.
Which ions are present in the electrolyte?
Answer:
Na+
Cl-
H+
OH-
Explanation:
NaCl + H2O -----> Na+. Cl- + H+ OH-
A 20 kg box of rocks is held out over a cliff at a height of 10 m. How much gravitational potential energy does the box of rocks have?
Explain why reactivity increases by linking increase in atomic number, number of shells with the shielding of outer most electron
Which of the following is a molecular compound?
F) NO2
G) Ca(NO3)2
H) H2SO4
J) NaOH
Answer: H
Explanation:
Bonding Story Mini Project
You can choose to show ionic bonding, covalent bonding (polar or nonpolar), or both, but your story must do the following:
1. Explain the type or types of bonding you are showing - this does not need to be explicit, but it needs to be somehow worked into the story.
2. Show at least 2 different bonds forming (e.g. 2 different compounds)
3. Show the valence electrons of the atoms and how they meet the octet rule
What are protons, neutrons, and electrons made of?
Answer:
quarks and gluons
PLEASE ASAP
HELP!!!!!!!!
Answer:
sec explanation: It is because it goes by order sec, min, day, month, and year etc
Answer:
sec
Explanation:
6CO2 + 6H2O → C6H12O6 + 602
How many molecules of CO2 are present
Answer:
12 hydrogen + 12 hydrogen = 24 hydrogen
Hydrogen was transferred from sugar and water on the left to water on the right releasing
Explanation:
if you have 3 dozen pennies how many ml of water would they displace
The mass of the displaced fluid can be expressed in terms of the density and its volume, m = ρV. The fluid displaced has a weight W = mg, where g is acceleration due to gravity. Therefore, the weight of the displaced fluid can be expressed as W = ρVg.
How plants adapt to temperature variation
PLEASE HELP! this is a science test/quiz I’m pretty sure the answers are on the bottom if not please comment so I can tell you them
What is wrong with writing the electron configuration of a ground state atom as 1s2 2s2 2p6 3s2 3p6 4s2 4d1?
Answer:
4d - orbital makes the given electronic configuration wrong.
Explanation:
The order of electronic configuration is written as;
1s²
2s² 2p⁶
3s² 3p⁶ 3d¹⁰
4s² 4p⁶ 4d¹⁰ 4f¹⁴
5s² 5p⁶ 5d¹⁰ 5f¹⁴
6s² 6p⁶ 6d¹⁰ 6f¹⁴
7s² 7p⁶ 7d¹⁰ 7f¹⁴
In order of energy level from the lowest to the highest, the configuration of the given atom in ground state can be written as;
1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹, when compared to the given configuration, 4d orbital makes the given configuration wrong, because the next orbital after 4s is 3d.
Please help me in Q3 it’s not understandable to me
Answer:
A- mixture
B- element
C- compound
Explanation:
A mixture is composed of two or more substances. Since it is not entirely homogeneous throughout, then it can not melt or boil at a fixed temperature.
An element is any substance that cannot be decomposed into simpler substances by ordinary chemical processes. This describes substance B.
A pure chemical element has a fixed melting and boiling point.
A compound is composed of one or more chemical elements. A compound may be broken down into its components by certain processes.
Given 7.3 moles of Ethane Gas (C2H6) and Excess Oxygen, how many moles of CO2 would be produced in the following combustion reaction? Round to 1 decimal place. Assume 1 Mole Ethane = 30.07 g of Ethane
2C2H6 + 7O2 --> 4CO2 + 6H2O
Answer:
Explanation: Find moles of product formed when C2H6 is burned in excess oxygen? Mass percent of ethane in a mixture before it goes through combustion with propane. Combust to create water and co2. Using gas stoichiometry find the volume of sulfur burned in excess of oxygen: Gas pressure inside a vessel: 1.60 grams of methane (CH4) is combusted.
NaNO3 ———> **heat above the arrow**
NaNO2 + O2
1. What kind of reaction is the one above? *
O A. Single replacement
O B. Double replacement
O C. Composition aka synthesis
O D. Decomposition
O E. Organic combustion
Answer:
D (Decomposition)
Explanation:
This reaction is a decomposition reaction because one substance (NaNO3) is being separated into two substances (NaNO2 and O2). Alternatively, you could use the process of elimination. The reaction can't be single/double replacement because there's only one reactant, it can't be synthesis because substances are being broken down, not formed, and it can't be combustion because O2 is a product, not a reactant, and CO2 and H2O aren't being produced, as is common with combustion reactions.
why do iron and nickel form a metallic bond
Can someone help?
Apparently you couldn’t see the picture in the previous question. Hopefully it will now.
Answer:
ummm sugar is the answer ;-;
What is the number after an element in a chemical equation called? Example: H2
a. subscript
b. coefficient
c. atom
d. equation
Answer:
the answer to your problem is A.Subscript...BRAINLIEST
The visible light is a short segment of the electromagnetic spectrum.
Yes or No
Answer:
Yes
Explanation:
The visible light spectrum is the segment of the electromagnetic spectrum that the human eye can view.
A student has three solid samples: one compound with covalent bonds, one compound with ionic bonds, and one compound with metallic bonds. The sample with metallic bonds is mostly likely to have which characteristic?
Answer: Hmm.. i'll try to figure it out hang on..
Explanation:
someone help pls :,)
Answer:D
Explanation:
Cause I literally just did this
Use the bond dissociation energies of H2 (435 kJ/mol) and of a typical carbon–carbon bond (347 kJ/mol) to decide which bond is stronger. Explain your reasoning.
Answer:
H2 bond is stronger
Explanation:
In this question, we are trying to make a connection between bond dissociation energy and the strength of a bond.
First of all, we must know that any bond that is quite stable must have a large bond dissociation energy. This means that more energy is supplied in order to cleave the bond.
A high bond dissociation energy actually implies that a bond is of low energy and consequently stable.
