Which of the following substances is a compound? A. hydrogen gas B. nitrogen gas C. table sugar D. oxygen gas

Answer: Dominant traits are always expressed when the connected allele is dominant, even if only one copy of the dominant trait exists. Recessive traits are expressed only if both the connected alleles are recessive. hope this helps

Explanation:

When a dominant trait is present it will always show. For example long tails are dominant. (Ll and LL will both result in long tails). For recessive traits you need two of them for the trait to show. For example short tails are recessive. (You HAVE to get ll for the short tail trait to show in the offspring.

Answer:

the answer is True

Explanation:

the answer is True

This is probably something you learned in elementary school: Rivers almost never flow in a straight line. Instead, they twist and turn along serpentine paths

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curved

Answer:

1-water 2-Sun 3-Gravity

Answer:

7N to the right

Explanation:

Answer:

The correct answer is - ligands such as hormones and neurotransmitters.

Explanation:

Communications between the cells of the unicellular organisms take place by the chemical signaling and the substances that help in sending chemical signals between cells are called ligands.

A ligand is a chemical molecule that binds with a specific molecule or a specific signaling receptor, a protein in or on the target cell. Hormones and neurotransmitters are the ligands that help in cell signaling and send chemical messages to the target sites.

Answer:

Known as the "king of the jungle" or the "king of beasts," lions are at the top of the food chain, and they hunt and eat other animals to survive. Their niche in the ecosystem allows them to help with other animal population control and prevent the spread of disease.

Explanation:

Answer:

law of inertia hope it helps

Answer:

2. About 138 g of KI will dissolve in 100 g of water at 10°C

3. 34.5 g of KI will dissolve in 25 g of water

4. The solution is not saturated but is unsaturated

Explanation:

From the graph:

1. KI is more soluble than KCl at 10°C because approximately 138g of KI dissolves at 10°C compared to 30 g of KCl per 100 g of water

2. About 138 g of KI will dissolve in 100 g of water at 10°C

3. 138 g of KI dissolves in 100 g of water at 10°C

In 25 g of water which is 1/4 × 100 g of water, 138/4 g = 34.5 g of KI will dissolve

Therefore, 34.5 g of KI will dissolve in 25 g of water

4.At 20 °C, a saturated solution of NaNO₃ will contain about 88 g of NaNO₃ in 100 g of water.

The solution prepared by the chemist contains 45 g of NaNO₃ in 100 g of water at 20 °C. The amount of solute present in the solution is less thanthe solvent can dissolve at that temperature, therefore, the solution is not saturated.

Answer:

compaction and cementation

Explanation:

sedimentary rock is layered rock, in order to become sedimentary it most be compacted to form layers and cemented to become hard. This is what i think. Hope i can help :)

Answer:

A. Water

Explanation:

Virtually every known substance can be referred to as MATTER, as long as it has weight and occupies space. Matter can exists in three different forms namely: solid, liquid and gaseous states.

However, each state of matter has its own unique property that characterizes it. WATER is the only matter that can exists in the three different states as follows:

- LIQUID - WATER

- SOLID - ICE

- GASEOUS - STEAM OR VAPOUR.

Answer:

false

Explanation:

not all science is good, or has good effects

False.

Science can possibly be dangerous when used by the wrong people. It can be used to create bombs, bioweapons, and much more.

Please mark Brainliest if this was helpful, and let me know if you have questions! :)

Answer: c

Explanation:

Answer:

The sugar particles are so small that they have dissolved in the water, and can easily pass through the filter.

Answer:

Sugar can not be separated due it has very fine particles.

Explanation:

When we use to separate sugar with salt they both are dissolved with the water.

Answer:

B: reflector

THe answer on EDG

Answer:

B

Explanation:

EDGE 2021

Hello!

[tex]\large\boxed{a = 3m/s^{2}}[/tex]

Use the following equation to solve for the average acceleration of the motorcycle:

[tex]a = \frac{v_{f}-v_{i}}{t}[/tex]

Plug in the given final, initial velocities, and the time:

[tex]a = \frac{15-6}{3}\\\\a = \frac{9}{3}\\\\a = 3m/s^{2}[/tex]

Answer:

how has your day been if it's night or the middle of the day

Explanation:

tell me and i hope u have a better or even better day tomorrow

Answer: Molar mass of [tex]NH_3[/tex] is 17.03 g

Explanation:

Molar mass is defined as the mass in grams of 1 mole of a substance.

S.I Unit of Molar mass is gram per mole and it is represented as g/mol.

It is found by adding the atomic masses of all the elements present.

Atomic Mass of Nitrogen (N) = 14.007 g

Atomic Mass of Hydrogen (H) = 1.008 g

Molar mass of [tex]NH_3[/tex] = 1(14.007)+3(1.008) g = 17.03 g

Answer:

Antimony

Explanation:

Number of moles = 9.51 mol

Mass= 1157.9376 g

The identity of an element is obtained from it's Molar mass.

This is given by the equation;

Molar mass = Mass / Number of moles

Molar mass = 1157.9376 g / 9.51 mol

Molar mass = 121.76

The only element with molar mass of 121.76 is Antimony

Answer: This is the magic element for everything on Earth. All life on Earth depends on carbon (C). It is in nearly every biological compound that makes up our bodies, systems, organs, cells, and organelles. When you breathe out, there is a lot of carbon dioxide (CO2).

Explanation:

Answer:

Like Carbon dioxide? or just like carbon? well anyway we breath in oxygen and breath out carbon the carbon goes into the air and gets re-cleaned turned into oxygen again. And also thousands of cars that run everyday going places let out tons of carbon into the the air every minute. (aka which is bad for human society, considering there's probably more carbon in the air then there is oxygen.)

Explanation:

So yes carbon does apply in everyday life. By the way the other person is right too. :)

Answer:

Ability to move

Must be able to eat

grow and develop

reproduce

respond to environment

taking in food

Explanation:

Hope this helped! Have a good day!

Answer:

D)It is transferred by convection and radiation.

Explanation:

Convection can be regarded as a model of heat transfer involving the transfer of thermal energy via movement of a fluids such liquid or gas. It's a process whereby heat is transferred by movement of a heated fluid. Radiation can be regarded as a model of heat transfer involving the transfer of thermal energy via thermal emission.

Therefore, when someone holds a hand above a fire it heat transfer occur through radiation because it happens through emmision of the heat and also convection as gas.

Answer:

2 atm

Explanation: add both partial pressures and subtract from total pressure

Answer:

You need to measure 120.9132 grams of MgO and add to 1 liter of distilled water in a beaker.

Explanation:

Capital M stands for molarity, or moles/liter. So 3 M MgO means 3 moles per liter of MgO.

1 L × [tex]\frac{3 moles MgO}{1 L MgO}[/tex] = 3 moles MgO

This means you need to measure 3 moles MgO to put into 1 Liter of water.

But you don't know how much that is, so you need to convert moles to grams.

First you need to find how many grams are in 1 mole of MgO.

You can search the molar mass of MgO online to get: 40.3044 g

But if you don't have the internet, use the periodic table to add the masses of Mg and O: 24.305 g + 15.999 g = 40.3044 g

Then write the fraction so that the units cancel out, so you get grams by itself on the top of the fraction.

1 L × [tex]\frac{3 moles MgO}{1 L MgO}[/tex] × [tex]\frac{40.3044 g MgO}{1 mole MgO}[/tex] = 120.9132 g MgO

You need to measure 120.9132 grams of MgO and add to 1 liter of distilled water.

We will prepare 1 L solution of 3 M MgO, by dissolving 120.91 grams of MgO in 1 litre of water.

Molarity is define as the no. of moles of solute dissolve in per liter if solvent or solution & it is represented as:

M = n / v

In the question, it is given that:

Molarity of MgO = 3M i.e. 3 moles of MgO is present in 1 liter of solution.

So, we have moles of MgO = 3 moles

Now, we convert moles of MgO to grams to know how much of solute is required, in the following manner:

n = W / M, where

M = molar mass of MgO = 40.30 g/mole

W = to find?

W = 3 mole × 40.30 g/mole = 120.91 grams

Hence, 120.91 grams of MgO is required.

To know more about molarity, visit the below link:

https://brainly.com/question/14469428

Answer:

f=ma

40=m*8

m=5kg

another object of same mass is added

=>m=5+5=10kg

f=10*8=80N

Explanation: