4,347 Answered Questions for the topic Science

Science Biology

07/26/21

The cell theory states that all of the following are true, except
The cell theory states that all of the following are true, excepta. All living things are made up of one or more cells and their products. b. The cell is the simplest unit that can carry out all... more
Follows • 1
Expert Answers •1
Science Biology

07/26/21

Plant and animal cells all need all of the following things, except, Cells undergo division for all of the following reasons, except
Plant and animal cells all need all of the following things, except a. a source of energy and nutrients b. water c. sunlight d. gasCells undergo division for all of the following reasons,... more
Follows • 1
Expert Answers •1

07/26/21

How to calculate the molar concentration of the given:
The reaction of 𝐾𝑂𝐻 with 𝐻𝑁𝑂3 is presented by the unbalanced chemical reactionbelow:___ KOH (aq) + ___ HNO3 (aq) ---> ___ KNO3 (aq) + ___ H2O(l)Calculate the molar concentration of Nitric acid... more
Follows • 1
Expert Answers •1
Science Physics Mechanics

07/26/21

Find initial velocity
A ball was thrown vertically downwards with initial velocity v0. After 2 s of free fall it got 11 times greater velocity than its initial velocity. standard acceleration of free fall is 10 m/s^2.... more
Follows • 1
Expert Answers •1

07/26/21

Physics problem about floating ball
A closed sphere/ball is floating (half of it is in the fluid). The sphere's mass is m, density ρ. What is the formula for finding the volume of the sphere?The correct answer is 2m/ρ.Can you show... more
Follows • 1
Expert Answers •1

07/26/21

Math problem plz solve
x2-3x=40Plz help me solve
Follows • 1
Expert Answers •1

07/26/21

Calculate the weight percent %(w/w).
The amount of oxalic acid (𝐻2𝐶2𝑂4) in a sample of rhubarb was determined byreacting with 𝐹𝑒3+. After extracting a 10.62 g of rhubarb with a solvent, oxidation of the oxalic acid required 36.44 mL... more
Follows • 2
Expert Answers •1

07/26/21

math problem plz solve

x3-x2-20x=0
Follows • 1
Expert Answers •1

07/26/21

Math problem solve

3x-10=-x2Plz help me
Follows • 1
Expert Answers •1

07/26/21

Math problem solve
8x=3x2-1Plz help
Follows • 1
Expert Answers •1

07/26/21

Solve math problem
x2-3x=28 plz solve
Follows • 1
Expert Answers •1

07/26/21

Math word problem

A researcher orders a broth of 8.8% glucose for her lab. However, she needs a stronger broth, one that is 13.8% glucose. Fortunately, she has 69.7 liters of 39.4% glucose broth in the stock room.... more
Follows • 1
Expert Answers •1

07/25/21

Macromolecules food combinations
So I have this home experiment since we're in a pandemic and schools are still home based learning, I have to make something edible with combinations of macromoleculesCarbohydrates+water,... more
Follows • 1
Expert Answers •1
Science Chemistry

07/24/21

Can someone please check-over my answers to these Chemistry problems?
1. Which of the following is NOT correct?A. Calorimetry involves an insulated container holding a liquid, usually water.B. An object of high temperature is placed into the calorimeter.C. The... more
Follows • 1
Expert Answers •1
Science Chemistry

07/24/21

Can someone please check if my answers to these Chemistry problems are correct?
1. If 2.5 kJ of energy are absorbed, how many grams of Silver are required if the temperature of the Silver was increased by 7.5 oC? (The specific heat of Silver is 0.2330 J/goC.)A. 1.4 gB. 14 gC.... more
Follows • 2
Expert Answers •1
Science Chemistry

07/24/21

Can someone please help me with these Chemistry problems?
(The answers I got are boxed.) 1. In the equation q = m × c × ΔT, q stands for _______.A. quantityB. qualityC. specific heatD. heat gained or lostE. None of the Above 2. In the equation q = m × c ×... more
Follows • 2
Expert Answers •1
Science Chemistry

07/24/21

Are my answers to these Chemistry questions correct?
The metric system unit of energy is the _______.A. PascalB. JouleC. KelvinD. ErgE. None of the Above 2. The _______ states that energy cannot be created or destroyed; it can only change form.A.... more
Follows • 1
Expert Answers •1
Science Chemistry

07/24/21

Can someone pease check-over my answers to these Chemistry questions?
1. _______ is the amount of heat necessary to raise the temperature of 1 gram of a substance by 1 degree Kelvin.A. A calorieB. EnergyC. HeatD. Specific heatE. Work 2. _______ is the ability to do... more
Follows • 2
Expert Answers •1

07/24/21

HELP! Which statistical test can I use!

I have 6 studies, 3 studies on a old drug treatment that increases hormone “A” in patients with a specific disease to help relieve their symptoms, and 3 studies on three different new drugs that... more
Follows • 1
Expert Answers •1
Science Physics

07/23/21

For a magnifying glass, F is 24 cm from the lens. The magnifying glass is held 17 cm in front of a seashell.
For a magnifying glass, F is 24 cm from the lens. The magnifying glass is held 17 cm in front of a seashell.1.Calculate the location of the image and state its characteristics.2.Determine the... more
Follows • 1
Expert Answers •1
Science Chemistry Chem

07/23/21

Consider the following equilibrium

4NH3 + 3O2 <--> 2N2 + 6H2O∆H= -1531 kJa) State whether the concentration of the reactants and products would increase, decrease,or remain constant when:1) the temperature of the system is... more
Follows • 1
Expert Answers •1
Science Physics

07/23/21

For a magnifying glass, F is 24 cm from the lens. The magnifying glass is held 17 cm in front of a seashell.

Calculate the location of the image and state its characteristics.Determine the magnification of the magnifying glass.
Follows • 2
Expert Answers •1

07/22/21

Oxidation Question: Chemistry
What is the oxidation number of chlorine in each anion? OCI- CIO4- CI- CI2 HCI thank you in advance for the help :)
Follows • 1
Expert Answers •1

07/22/21

Redox Reaction Question
Identify the oxidizing agent and the reducing agent in the following redox reaction. Explain the answerBrO3- + I- + H+ ---> Br- + I2 + H2O
Follows • 2
Expert Answers •1

07/22/21

How to balance the following redox reaction using half-reaction method
How to balance the following redox reaction using half-reaction method under basic conditionsSn(OH)42- + MnO4- ---> MnO2 + Sn(OH)62-thank u for taking the time to help me with this question
Follows • 2
Expert Answers •2

Still looking for help? Get the right answer, fast.

Ask a question for free

Get a free answer to a quick problem.
Most questions answered within 4 hours.

OR

Find an Online Tutor Now

Choose an expert and meet online. No packages or subscriptions, pay only for the time you need.